General Description
The MAX5005/MAX5006/MAX5007 are low-dropout
(LDO), micropower linear voltage regulators with an
integrated microprocessor (µP) reset circuit for use with
USB peripheral devices. Each device is available with a
fixed +3.3V output voltage and can deliver up to
150mA load current. Each device features ±15kV tran-
sient voltage suppression (TVS) as well as precision
1.5kΩdata-line termination resistors for USB digital sig-
nals making them ideal for use with USB peripherals.
The MAX5005/MAX5006/MAX5007 include an internal
reset circuit that enables the USB microcontroller
100ms after the LDO regulator output voltage reaches
regulation. Reset outputs are available in push-pull
(active-low or active-high) and open-drain (active-low)
options.
The MAX5005/MAX5006/MAX5007 are optimized for
use with a 1µF ceramic output capacitor. Each device
includes thermal shutdown protection, output short-cir-
cuit protection, and output to input reverse leakage pro-
tection. These devices also include an active-low
manual reset input.
The MAX5005 features an open-drain reset output, the
MAX5006 features an active-low push-pull reset output,
and the MAX5007 features an active-high push-pull
reset output. Each device is available in a space-saving
10-pin µMAX package.
Applications
USB Peripherals
Hand-Held Instruments
Features
♦Integrated ±15kV Transient Voltage Suppressors
for D+ and D- Data Lines
♦Pin Selectable Internal D+ and D- Termination
Resistors (1.5kΩ±5%)
♦Integrated Microprocessor Reset Circuit with
100ms (min) Timeout
♦3.3V Output with ±3% Accuracy
♦25µA Quiescent Current at Full Load
♦Small 1µF Output Capacitor
♦Output to Input Reverse Leakage Protection
♦Thermal and Short-Circuit Protection
♦10-Pin µMAX Package
MAX5005/MAX5006/MAX5007
150mA USB LDO Regulators with ±15kV TVS
and µP Reset
________________________________________________________________ Maxim Integrated Products 1
1
2
3
4
5
10
9
8
7
6
OUT
GND
MR
RESET/(RESET)D-
GND
D+
IN
MAX5005
MAX5006
MAX5007
µMAX
TOP VIEW
ENRSELR
() FOR MAX5007 ONLY.
Pin Configuration
Ordering Information
19-2035; Rev 1; 11/02
PART TEMP
RANGE
PIN-
PACKAGE
RESET
OUTPUT
MAX5005_CUB* 0°C to +70°C 10 µMAX Op en-
D r ai n Low
MAX5006_CUB* 0°C to +70°C 10 µMAX Push-Pull
Low
MAX5007_CUB* 0°C to +70°C 10 µMAX Push-Pull
High
*Insert “A” for a 7.5% reset threshold and “B” for a 12.5% reset
threshold.
D+
VBUS VCC
RSTD+
D- D+
D-
CIN COUT
1µF
1µF
CERAMIC
IN
RESET
(RESET)
MR
ENR
3.3V USB
CONTROLLER
USB
PORT
GND GND
27Ω
27Ω
D-
GND
( ) FOR MAX5007 ONLY
MAX5005
MAX5006
MAX5007
OUT
5V 3.3V
SELR
Typical Operating Circuit
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
MAX5005/MAX5006/MAX5007
150mA USB LDO Regulators with ±15kV TVS
and µP Reset
2_______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(VIN = +5V, IOUT = 0, COUT = 2.2µF, TA= 0°C to +70°C, unless otherwise noted. Typical specifications are at TA= +25°C.) (Note 1)
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
IN to GND .................................................................-0.3V to +6V
D+, D- to GND..........................................................-0.3V to +6V
MR to GND ..............................................-0.3V to (VOUT + 0.3V)
RESET, RESET to GND, Push-Pull............-0.3V to (VOUT + 0.3V)
RESET to GND, Open-Drain.....................................-0.3V to +6V
OUT, SELR, ENR to GND .........................................-0.3V to +6V
Maximum Current to Any Pin
(except IN, OUT, D+, D-).............................................± 20mA
Short-Circuit Duration ....................................................Indefinite
Continuous Power Dissipation (TA= +70°C)
10-Pin µMAX (derate 5.6mW/°C above +70°C) ...........444mW
Thermal Resistance (θJA)...............................................180°C/W
Operating Temperature Range...............................0°C to +70°C
Junction Temperature......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Input Voltage Range VIN ILOAD = 100mA 4.0 5.5 V
Supply Current IGND Measured at GND 25 50 µA
REGULATOR
Guaranteed Output Current IOUT 150 mA
Output Voltage VOUT VIN = 4.0V to 5.5V, IOUT = 0 to 100mA 3.2 3.3 3.4 V
ILOAD = 10mA 20 30
Dropout Voltage (Note 2) ∆VDO ILOAD = 150mA 300 400 mV
Output Current Limit VIN = 5.5V 165 350 mA
Input Reverse Leakage Current VIN = 0, VOUT = 5.5V 1 µA
Startup Response Time Rising edge of VIN to VOUT
RL = 500Ω500 µs
Thermal Shutdown Temperature TJSHDN 160 oC
Thermal Shutdown Hysteresis ∆ TJSHD N20 oC
RESET CIRCUIT
MAX500_ACUB 2.92 3.05 3.18
Reset Threshold (Note 3) VTH MAX500_BCUB 2.75 2.89 3.01 V
Reset Timeout Period tRP 100 200 300 ms
VOUT to Reset Delay tRD 75 µs
VIL 0.2 x
VOUT
MR Input Voltage
VIH 0.8 x
VOUT
V
MR Minimum Input Pulse Width 1 µs
MR Glitch Rejection 120 ns
MR to Reset Delay 500 ns
MR Pullup Resistance to OUT 10 25 45 kΩ
VIL Connects RTERM to D- 0.2 x
VOUT
SELR Input Voltage
VIH Connects RTERM to D+ 0.8 x
VOUT
V
MAX5005/MAX5006/MAX5007
150mA USB LDO Regulators with ±15kV TVS
and µP Reset
_______________________________________________________________________________________ 3
ELECTRICAL CHARACTERISTICS (continued)
(VIN = +5V, IOUT = 0, COUT = 2.2µF, TA= 0°C to +70°C, unless otherwise noted. Typical specifications are at TA= +25°C.) (Note 1)
Note 1: All devices are 100% tested at TA= +25°C. Limits over temperature are guaranteed by characterization and not production
tested.
Note 2: Dropout voltage is defined as VIN - VOUT when VOUT is 2% below the value of VOUT for VIN = VOUT + 1V.
Note 3: Specification is guaranteed to ±4σlimit.
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
SELR Input Current SELR = GND or OUT -1 1 µA
VIL RTERM enabled 0.2 x
VOUT
ENR Input Voltage
VIH RTERM disabled 0.8 x
VOUT
V
ENR Input Current ENR = GND or OUT -1 1 µA
VOUT > 1.0V, ISINK = 50µA, reset asserted 0.3
Open-Drain RESET Output Low
Voltage (MAX5005) VOL VOUT > 2.7V, ISINK = 3.2mA, reset asserted 0.4 V
Open-Drain Reset Output Leakage
Current (MAX5005) ILKG Reset not asserted -1.0 1.0 µA
VOUT = 1.0V, ISINK = 50µA, reset asserted 0.3
VOL VOUT > VTH(MIN), ISINK = 3.2mA, reset
asserted 0.4
Push-Pull RESET Output Voltage
(MAX5006)
VOH VOUT > VTH(MAX), ISOURCE = 500µA,
reset not asserted
0.8 x
VOUT
V
VOL VOUT > VTH(MAX), ISINK = 3.2mA,
reset not asserted 0.4
Push-Pull RESET Output Voltage
(MAX5007) VOH VOUT = 1.0V, ISOURCE = 150µA, reset
asserted
0.8 x
VOUT
V
USB OPTIONS AND TRANSIENT SUPPRESSION
D+/D- RTERM Impedance ENR = GND, SELR = GND or OUT 1425 1500 1575 Ω
D+/D- Input Leakage Current VENR = VOUT = 3.3V -1 1 µA
ENR = OUT 5.5
D+ to D- Capacitance
1MHz, 100mVp-p signal
applied at D+ and D-,
VOUT = 3.3V Unpowered 24
pF
ENR = OUT 40
D+, D- Capacitance to GND
1MHz, 100mVp-p signal
applied at D+ and D-,
VOUT = 3.3V Unpowered 47
pF
ESD Trigger Voltage dV/dt < 1V/ns, VD+ or VD- > 3.6V 3.6 5 V
Surge Trigger Voltage dV/dt < 2V/µs, VD+ or VD- > 3.6V 3.6 16 V
Clamping Voltage 6A, pulse width = 200ns to 40µs16V
Surge Current 16V, pulse width = 200ns to 40µs±6A
Human Body Model MIL-STD-883 ±16
Contact Discharge IEC1000-4-2
(EN61000-4-2) ±8
D+/D- to GND ESD
Air Discharge IEC1000-4-2 (EN61000-4-2) ±15
kV
MAX5005/MAX5006/MAX5007
150mA USB LDO Regulators with ±15kV TVS
and µP Reset
4_______________________________________________________________________________________
22.0
23.5
23.0
22.5
24.0
24.5
25.0
25.5
26.0
26.5
27.0
3.5 4.0 4.5 5.0 5.5
GROUND-PIN CURRENT
vs. SUPPLY VOLTAGE
MAX5005-7 toc01
SUPPLY VOLTAGE (V)
GROUND-PIN CURRENT (µA)
I
OUT
= 150mA
I
OUT
= 0
250
0
110100
MAXIMUM PULSE DURATION vs.
RESET THRESHOLD OVERDRIVE
50
MAX5005-7 toc02
RESET THRESHOLD OVERDRIVE, VTH - VOUT (mV)
PULSE DURATION (µs)
100
150
200
RESET OCCURS ABOVE THIS LINE
0
50
25
75
100
125
150
175
200
225
250
275
300
0306090120 150
DROPOUT VOLTAGE
vs. LOAD CURRENT
MAX5005-7 toc03
LOAD CURRENT (mA)
DROPOUT VOLTAGE (mV)
4515 75 105 135
110
-60
-50
-40
-20
-30
-10
0
0.01 0.1
POWER-SUPPLY REJECTION RATIO vs.
FREQUENCY
MAX5005-07 toc04
FREQUENCY (kHz)
PSRR (dB)
-5
-15
-25
-35
-45
-55 COUT = 1µF
3.25
3.28
3.27
3.26
3.29
3.30
3.31
3.32
3.33
3.34
3.35
3.5 4.0 4.5 5.0 5.5
OUTPUT VOLTAGE
vs. SUPPLY VOLTAGE
MAX5005-7 toc05
SUPPLY VOLTAGE (V)
OUTPUT VOLTAGE (V)
I
OUT
= 150mA
I
OUT
= 0
0
75
50
25
100
125
150
0604515 30 75 90 105 120 135 150
REGION OF STABLE COUT
ESR vs. LOAD CURRENT
MAX5005-7 toc06
LOAD CURRENT (mA)
COUT ESR (Ω)
COUT = 4.7µF
COUT = 1µF
STABLE REGION BELOW THE CURVE
200µs/div
OUTPUT NOISE
MAX5005-7 toc07
VOUT
1mV/div
Typical Operating Characteristics
(VIN = +5V, IOUT = 0, COUT = 2.2µF, unless otherwise noted.)
MAX5005/MAX5006/MAX5007
150mA USB LDO Regulators with ±15kV TVS
and µP Reset
_______________________________________________________________________________________ 5
Typical Operating Characteristics (continued)
(VIN = +5V, IOUT = 0, COUT = 2.2µF, unless otherwise noted.)
1.0ms/div
LOAD-TRANSIENT RESPONSE
3.3V
3.3V
MAX5005-7 toc10a
ILOAD
VOUT
50mV/div
VOUT
50mV/div
COUT = 2.2µF
COUT = 1.0µF
20mA
0V
100µs/div
LINE-TRANSIENT RESPONSE
5.25V
4.75V
3.3V
MAX5005-7 toc11b
VIN
200mV/div
VOUT
50mV/div
IOUT = 10mA
COUT = 1µF
LOAD-TRANSIENT RESPONSE
MAX5005-7 toc10b
1.0ms/div
20mA
3.3V
3.3V
ILOAD
VOUT
50mV/div
COUT = 10µF
COUT = 4.7µF
VOUT
50mV/div
0V
100µs/div
LINE-TRANSIENT RESPONSE
4.75V
3.3V
MAX5005-7 toc11a
VIN
200mV/div
5.25V
VOUT
50mV/div
IOUT = 10mA
COUT = IµF
50ms/div
TURN-ON/TURN-OFF RESPONSE
MAX5005-7 toc08
VIN
5V/div
RESET
5V/div
RL = 1kΩ
VOUT
5V/div
1ms/div
STARTUP RESPONSE
MAX5005-7 toc09
VIN
5V/div
VOUT
1V/div
RL = 1kΩ
0.01 1 100
TVS PEAK POWER vs. PULSE WIDTH
MAX5005-7 toc12
PULSE WIDTH (µs)
PEAK POWER (W)
1000
100
1
10
0.1 10
D+ OR D- WITH RESPECT TO GROUND
MAX5005/MAX5006/MAX5007
150mA USB LDO Regulators with ±15kV TVS
and µP Reset
6_______________________________________________________________________________________
Pin Description
PIN NAME DESCRIPTION
1IN
Regulator Input. Supply voltage ranges from +4.0V to +5.5V. Bypass with a 1µF ceramic capacitor
to ground.
2D+
D+ ESD/Transient Suppression Input. Connect directly to USB port D+ data input. SELR high and
ENR low connects D+ to OUT through a 1.5kΩ resistor.
3, 9 GND Ground. This pin also functions as a heatsink. Solder to large pads or the circuit board ground
plane to maximize thermal dissipation.
4D-
D- ESD/Transient Suppression Input. Connect directly to USB port D- data input. SELR low and
ENR low connects D- to OUT through a 1.5kΩ resistor.
5SELR
USB Full-Speed/Low-Speed Termination Resistor Select. Logic high connects the termination
resistor to D+ for full-speed peripherals. Logic low connects the termination resistor to D- for low-
speed peripherals. An internal 1.5kΩ resistor connects to OUT when ENR is low.
6ENR USB Termination Resistor Enable. When reset is not asserted, ENR low enables the termination
resistor connection. ENR high or a reset disables the termination resistor connection.
RESET
Active-Low Reset Output. RESET remains low while VOUT is below the reset threshold or while MR
is held low. RESET remains low for the duration of the reset timeout period after the reset conditions
are terminated. (MAX5005/MAX5006 ONLY)
7
RESET
Active-High Reset Output. RESET remains high while VOUT is below the reset threshold or while MR
is held low. RESET remains high for the duration of the reset timeout period after the reset
conditions are terminated. (MAX5007 ONLY)
8MR
Active-Low Manual Reset Input. A logic low forces a reset. Reset remains asserted for the duration
of the reset timeout period after MR transitions from low to high. Leave unconnected or connect to
OUT if not used. MR has an internal pullup resistor of 25kΩ to OUT.
10 OUT Voltage Regulator Output. Fixed +3.3V. Sources up to 150mA. Bypass with a 1µF (min) capacitor
for full rated performance.
MAX5005/MAX5006/MAX5007
150mA USB LDO Regulators with ±15kV TVS
and µP Reset
_______________________________________________________________________________________ 7
Detailed Description
The MAX5005/MAX5006/MAX5007 are USB applica-
tion-specific, low-dropout, low-quiescent current linear
regulators with an integrated µP reset circuit (see
Figure 1). The devices drive loads up to 150mA and
are available with a fixed output voltage of +3.3V.
Features include 1.5kΩD+ and D- termination resistors
and ±15kV transient voltage suppression (TVS) in
accordance with IEC1000-4-2 (EN61000-4-2) Air
Discharge Method and MILSTD883C- Method 3015-6
making the MAX5005/MAX5006/MAX5007 ideal for use
with USB peripheral devices. The internal reset circuit
monitors the regulator output voltage and asserts a
reset signal when the output is typically -7.5% out of
regulation for MAX500_ACUB and -12.5% out of regula-
tion for MAX500_BCUB.
Reset Circuit
The reset supervisor circuit is fully integrated in the
MAX5005/MAX5006/MAX5007, and uses the same ref-
erence voltage as the regulator. Two supply tolerance
reset thresholds, typically -7.5% and -12.5%, are avail-
able for each type of device.
7.5% reset: Reset does not assert until the regulator
output voltage is at least -3.6% out of tolerance and
always asserts before the regulator output voltage is
-11.5% out of tolerance.
12.5% reset: Reset does not assert until the regulator
output voltage is at least -8.8% out of tolerance and
always asserts before the regulator output voltage is
-16.7% out of tolerance.
Reset Output
The MAX5005/MAX5006/MAX5007 µP supervisory cir-
cuits assert a reset during power-up, power-down, and
IN
4.0V to 5.5V
REVERSE
CURRENT
PROTECTION
CURRENT
LIMIT
PROTECTION ESD/
SURGE
PROTECTION
LDO
ERROR
AMP
200ms
RESET
TIMEOUT
THERMAL
PROTECTION
RESET
COMPARATOR
LOW
SPEED
FULL
SPEED
USB
TERMINATION
DRIVER
GND
D+
1.23V
TVS
SELR ENR GND
TVS
( ) FOR MAX5007 ONLY.
1.5kΩ1.5kΩ
25kΩ
OUT
3.3V
MR
D-
OUTOUT
MAX5005
MAX5006
MAX5007
RESET/(RESET)
VREF
Figure 1. Functional Diagram
MAX5005/MAX5006/MAX5007
150mA USB LDO Regulators with ±15kV TVS
and µP Reset
8_______________________________________________________________________________________
brownout conditions. Reset is guaranteed to be logic
high or low depending on the device chosen (see
Ordering Information). RESET or RESET asserts when
VOUT is below the reset threshold and remains assert-
ed for at least 100ms minimum after VOUT rises above
the reset threshold. RESET or RESET also asserts when
MR is pulled low.
SELR and
ENR
When reset is not asserted a logic high to SELR con-
nects a 1.5kΩtermination resistor from D+ to OUT for
full speed USB peripherals and a logic low connects a
1.5kΩtermination resistor from D- to OUT for low-speed
peripherals. Logic low on ENR enables the selected
termination resistor connection and logic high disables
the selected termination resistor connection. An assert-
ed reset always disconnects the termination resistors.
D+ and D-
D+ and D- include transient voltage suppressors rated
at ±15kV (see USB ±15kV Transient Voltage
Suppression section).
The proprietary TVS shunt circuit passes no data
through the MAX5005/MAX5006/MAX5007, thereby
eliminating delays associated with series protection cir-
cuits. D+ and D- have only 1µA of leakage current and
a typical input capacitance of 40pF at 1MHz.
Manual Reset Input
Many µP-based products require manual reset capabil-
ity, allowing the operator, a test technician, or external
logic circuitry to initiate a reset. A logic low on MR
asserts a reset while the regulator output voltage is still
within tolerance.
Reset remains asserted while MR is low and for the
reset timeout period (100ms minimum) after MR returns
high. The MR input has an internal pullup of 25kΩ(typ)
to OUT. Drive this input with TTL/CMOS logic levels or
with open-drain/collector outputs. Connect a normally
open momentary switch from MR to GND to create a
manual reset function; external debounce circuitry is
not required. If MR is driven from long cables or the
device is used in a noisy environment, connect a 0.1µF
capacitor from MR to GND to provide additional noise
immunity. For proper operation, ensure that the voltage
on MR is not greater than a diode drop above VOUT.
Output to Input Reverse Leakage
Protection
An internal circuit monitors the input and output volt-
ages. When the output voltage is greater than the input
voltage, the internal pass transistor and parasitic
diodes turn off, and OUT powers the device. There is
no leakage path from OUT to IN. Therefore, the output
can be powered from an auxiliary supply such as a
backup battery without any need for additional blocking
diodes.
Current Limit
The MAX5005/MAX5006/MAX5007 include a current
limiter that monitors and controls the pass transistor’s
gate voltage, limiting the output current to 350mA (typ).
For design purposes, consider the current limit to be
160mA (min) to 600mA (max). The output can be short-
ed to ground for an indefinite period without damaging
the part.
Thermal Protection
When the junction temperature exceeds TJ= +160°C,
an internal thermal sensor signals the shutdown logic,
turning off the pass transistor and allowing the IC to
cool. The thermal sensor turns the pass transistor on
again after the IC’s junction temperature decreases by
20°C, resulting in a pulsed output during continuous
thermal overload conditions. Thermal overload protec-
tion is designed to protect the MAX5005/MAX5006/
MAX5007 in the event of fault conditions. For continu-
ous operation, do not exceed the absolute maximum
junction temperature rating of TJ= +150°C.
Operating Region and Power Dissipation
The MAX5005/MAX5006/MAX5007’s maximum power
dissipation depends on the thermal resistance of the
case and circuit board, the temperature difference
between the die junction and the ambient air, and the
rate of airflow. The power dissipation across the device
is P = IOUT (VIN - VOUT). The maximum power dissipa-
tion is:
PMAX = (TJ- TA) / (ΘJA)
where TJ- TAis the temperature difference between
the die junction and the surrounding air, ΘJA is the ther-
mal resistance of the package from junction to ambient.
The MAX5005/MAX5006/MAX5007’s ground pin (GND)
performs the dual function of providing an electrical
connection to the system ground and channeling heat
away. Connect GND to the system ground using a
large pad or ground plane. For optimum performance,
minimize trace inductance to D+, D-, and GND.
Applications Information
Capacitor Selection and Regulator
Stability
For stable operation over the full temperature range
and with load currents up to 150mA, use a 1µF (min)
output capacitor. To reduce noise and improve load
transient response, stability, and power-supply rejec-
tion, use large output capacitor values such as 10µF.
MAX5005/MAX5006/MAX5007
150mA USB LDO Regulators with ±15kV TVS
and µP Reset
_______________________________________________________________________________________ 9
Note that some ceramic dielectrics exhibit large capac-
itance and ESR variation with temperature. With
dielectrics such as Z5U and Y5V, it may be necessary
to use 2.2µF or more to ensure stability at temperatures
below -10°C. With X7R or X5R dielectrics, 1µF should
be sufficient at all operating temperatures. Also, for
high-ESR tantalum capacitors, 2.2µF or more may be
needed to maintain stability. A graph of the Region of
Stable COUT ESR vs. Load Current is shown in the
Typical Operating Characteristics.
To improve power-supply rejection and transient
response use a 1µF capacitor between IN and GND.
Negative-Going VOUT Transients
These devices are relatively immune to short-duration,
negative-going VOUT transients. The Typical Operating
Characteristics section shows a graph of the Maximum
Pulse Duration vs. Reset Threshold Overdrive for which
reset is not asserted. The graph was produced using
negative going output transients starting at VOUT and
ending below the reset threshold by the magnitude
indicated (Reset Threshold Overdrive). The graph
shows the maximum pulse width that a negative going
VOUT transient can typically have without triggering a
reset pulse. As the amplitude of the transient increases
(i.e., goes further below the reset threshold), the maxi-
mum allowable pulse width decreases. Typically, a
VOUT transient that goes only 10mV below the reset
threshold and lasts for 75µs will not trigger a reset
pulse.
USB ±15kV Transient Voltage
Suppression
The universal serial bus (USB) simplifies interconnectiv-
ity between peripheral devices and personal comput-
ers. USBs offer high-speed data communication rates
(up to 12Mbps) using only two lines (D+ and D-).
CMOS based USB peripherals that utilize deep submi-
cron technologies are more susceptible to electrostatic
discharge (ESD) failure due to shorter channel lengths,
shallower drain/source junctions, and lightly doped
drain structures. The MAX5005/MAX5006/MAX5007
incorporate a proprietary transient voltage suppression
(TVS) circuit for use with submicron devices.
The TVS design complies with IEC-1000-4-2 level 4
(EN61000-4-2) ±15kV Air Discharge and ±8kV Contact
Discharge as well as MIL STD 883C-Method 3015-6
level 3.
The TVS circuit handles up to 11A of surge current. The
TVS/ESD structure is directly coupled to the output of
the LDO regulator.
TVS Surge Test Information
Figure 2 shows the test circuit used to generate the
8/40µs short circuit waveform of Figure 3. Figures 4, 5,
and 6 show the actual surge current I/V characteristics
with various capacitive loads.
ESD Performance
The MAX5005/MAX5006/MAX5007 are characterized
to the following limits on D+, D-, and IN:
•±15kV using the Human Body Model
•±8kV using the Contact Discharge Method specified
in IEC 1000-4-2 (EN61000-4-2)
•±15kV using the Air-Gap Discharge Method speci-
fied in IEC 1000-4-2 (EN61000-4-2).
Note that in order to achieve the above ESD levels on
IN, a ceramic 1µF ceramic capacitor should be con-
nected from IN to GND.
ESD Test Conditions
ESD performance depends on several conditions.
Contact Maxim for a reliability report that documents
test setup, methodology, and results.
Human Body Model
Figure 7 shows the Human Body Model, and Figure 8
shows the current waveform it generates when dis-
charged into low impedance. This model consists of a
100pF capacitor charged to the ESD voltage of interest,
which is then discharged into the test device through a
1.5kΩresistor.
ESD Transmission Line Pulsing
Figure 9 shows the test circuit used for transmission
line pulsing conditions. The 200ns pulsewidth has a
rise time of 4ns. Figure 10 shows the Current vs.
Voltage characteristics for various output capacitance
values.
MAX5005/MAX5006/MAX5007
150mA USB LDO Regulators with ±15kV TVS
and µP Reset
10 ______________________________________________________________________________________
TVS
DEVICE
UNDER
TEST
HIGH
VOLTAGE 2µF
4kV
80µH
200kΩ20Ω
0.2µF
LEAKAGE
RELAY
JENNINGS
RELAY
RF3D-26S
D+/D-
Figure 2. Surge Current Test Circut
10
2
0
4
6
8
12
24608101614 1812 20
VOLTAGE (V)
8/40µs PULSE WIDTH
COUT = 0
D+ OR D- TO GND
CURRENT (A)
Figure 4. Surge Current I/V Characteristic (COUT = 0)
10
2
0
4
6
8
12
24608101614 1812
VOLTAGE (V)
8/40µs PULSE WIDTH
COUT = 1µF
D+ OR D- TO GND
CURRENT (A)
Figure 5. Surge Current I/V Characteristic (COUT = 1µF)
10
2
0
4
6
8
12
24608101614 1812
VOLTAGE (V)
8/40µs PULSE WIDTH
COUT = 10µF
D+ OR D- TO GND
CURRENT (A)
Figure 6. Surge Current I/V Characteristic (COUT = 10µF)
IP 100%
50%
t1
8µs
t2
40µs
TIME
0
0
AMPERES
Figure 3. Test Circuit Surge Current Waveform (Short-Circuit
Load)
MAX5005/MAX5006/MAX5007
150mA USB LDO Regulators with ±15kV TVS
and µP Reset
______________________________________________________________________________________ 11
RL
L
10MΩ
DEVICE
tpw = 200ns
tRISE = 4ns
SCOPE
VIN
Zo = 50Ω
Figure 9. Transmission Line Pulsing Setup for ESD I/V
Characteristics
1
0
4
3
2
6
5
7
4602 810121416
VOLTAGE (V)
CURRENT (A)
200ns PULSE WIDTH
D+ OR D- TO GND
COUT = 1µF
Figure 11. Transmission Line Pulsing I/V Characteristic
(COUT = 1µF)
1
0
4
3
2
6
5
7
4602 810121416
VOLTAGE (V)
CURRENT (A)
200ns PULSE WIDTH
D+ OR D- TO GND
COUT = 0
Figure 10. Transmission Line Pulsing I/V Characteristic
(COUT = 0)
CHARGE-CURRENT
LIMIT RESISTOR
DISCHARGE
RESISTANCE
STORAGE
CAPACITOR
Cs
100pF
RC
1MΩ
RD
1500Ω
HIGH-
VOLTAGE
DC
SOURCE
DEVICE
UNDER
TEST
Figure 7. Human Body ESD Test Model
IP 100%
90%
36.8%
tRL TIME
tDL
CURRENT WAVEFORM
PEAK-TO-PEAK RINGING
(NOT DRAWN TO SCALE)
Ir
10%
0
0
AMPERES
Figure 8. Human Body Model Current Waveform
MAX5005/MAX5006/MAX5007
150mA USB LDO Regulators with ±15kV TVS
and µP Reset
12 ______________________________________________________________________________________
Chip Information
TRANSISTOR COUNT: 890
PROCESS: BiCMOS
1
0
4
3
2
6
5
7
4602 810121416
VOLTAGE (V)
CURRENT (A)
200ns PULSE WIDTH
D+ OR D- TO GND
COUT = 10µF
Figure 12. Transmission Line Pulsing I/V Characteristic
(COUT = 10µF)
MAX5005/MAX5006/MAX5007
150mA USB LDO Regulators with ±15kV TVS
and µP Reset
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are
implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.
Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 13
©2002 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.
10LUMAX.EPS
PACKAGE OUTLINE, 10L uMAX/uSOP
1
1
21-0061 I
REV.DOCUMENT CONTROL NO.APPROVAL
PROPRIETARY INFORMATION
TITLE:
TOP VIEW
FRONT VIEW
1
0.498 REF
0.0196 REF
S
6∞
SIDE VIEW
α
BOTTOM VIEW
0∞ 0∞ 6∞
0.037 REF
0.0078
MAX
0.006
0.043
0.118
0.120
0.199
0.0275
0.118
0.0106
0.120
0.0197 BSC
INCHES
1
10
L1
0.0035
0.007
e
c
b
0.187
0.0157
0.114
H
L
E2
DIM
0.116
0.114
0.116
0.002
D2
E1
A1
D1
MIN
-A
0.940 REF
0.500 BSC
0.090
0.177
4.75
2.89
0.40
0.200
0.270
5.05
0.70
3.00
MILLIMETERS
0.05
2.89
2.95
2.95
-
MIN
3.00
3.05
0.15
3.05
MAX
1.10
10
0.6±0.1
0.6±0.1
ÿ0.50±0.1
H
4X S
e
D2
D1
b
A2 A
E2
E1 L
L1
c
α
GAGE PLANE
A2 0.030 0.037 0.75 0.95
A1
Package Information
(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information
go to www.maxim-ic.com/packages.)
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