1
LT1389
Nanopower Precision
Shunt Voltage Reference
■
Initial Voltage Accuracy: 0.05%
■
Low Operating Current: 800nA
■
Low Drift: 10ppm/
°
C Max
■
Less Than 1Ω Dynamic Impedance
■
Available in 1.25V, 2.5V, 4.096V and
5V SO-8 Packages
The LT
®
1389 is a nanopower, precision shunt voltage
reference. The bandgap reference uses trimmed preci-
sion thin-film resistors and improved curvature correction
techniques to achieve 0.05% initial voltage accuracy with
guaranteed 10ppm/°C maximum temperature drift. Volt-
age regulation is maintained to an ultralow 800nA operating
current. Advances in design, processing and packaging
achieve low temperature cycling hysteresis.
The LT1389 does not require an output compensation
capacitor, but is stable with capacitive loads. Low dy-
namic impedance makes the LT1389 reference easy to
use from unregulated supplies.
The LT1389 reference can be used as a high performance
upgrade to the LM185/LM385, LT1004, LT1034 and
LT1634 where lowest power and guaranteed tempera-
ture drift are required.
■
Portable Meters
■
Precision Regulators
■
A/D and D/A Converters
■
Calibrators
5V
4.7M
LT1389-1.25
1389 TA01
V
OUT
1.25V
TEMPERATURE (°C)
0
REFERENCE VOLTAGE CHANGE (mV)
1.5
30
1389 TA02
0
–1.0
10 20 40
–1.5
–2.0
2.0
1.0
0.5
–0.5
50 60 70
I
R
= 0.8µA
V
OUT
= 1.25V
Temperature Drift
, LTC and LT are registered trademarks of Linear Technology Corporation.
DESCRIPTIO
U
FEATURES
APPLICATIO S
U
TYPICAL APPLICATIO
U
2
LT1389
OUTPUT TEMPERATURE COEFFICIENT
TEMPERATURE VOLTAGE ACCURACY (%) (ppm/°C) PART TYPE PART MARKING
0°C to 70°C 1.250 0.05 10 LT1389ACS8-1.25 389A12
1.250 0.05 20 LT1389BCS8-1.25 389B12
2.500 0.05 20 LT1389BCS8-2.5 389B25
4.096 0.075 50 LT1389BCS8-4.096 1389B4
5.000 0.075 50 LT1389BCS8-5 1389B5
ORDER PART
NUMBER
(Note 1)
Operating Current
1.25V............................................................... 20mA
2.5V................................................................. 20mA
4.096V............................................................. 10mA
5V.................................................................... 10mA
Forward Current .................................................. 20mA
Operating Temperature Range ..................... 0°C to 70°C
Storage Temperature Range (Note 2) ... –65°C to 150°C
Lead Temperature (Soldering, 10 sec)..................300°CS8 PART MARKING
LT1389ACS8-1.25
LT1389BCS8-1.25
LT1389BCS8-2.5
LT1389BCS8-4.096
LT1389BCS8-5
389A12
389B12
389B25
*Connected internally. Do Not Connect external circuitry to these pins.
Consult factory for Industrial and Military grade parts.
T
JMAX
= 125°C, θ
JA
= 190°C/W
1
2
3
4
8
7
6
5
TOP VIEW
S8 PACKAGE
8-LEAD PLASTIC SO
DNC*
DNC*
DNC*
GND
DNC*
DNC*
V
OUT
GND
AVAILABLE OPTIO S
U
The ● denotes specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. (Note 3)
PARAMETER CONDITIONS MIN TYP MAX UNITS
Reverse Breakdown Voltage LT1389ACS8/LT1389BCS8 (I
R
= 0.8µA) 1.24937 1.250 1.25062 V
–0.05 0.05 %
LT1389ACS8 (I
R
= 0.8µA) ●1.24849 1.250 1.25149 V
–0.12 0.12 %
LT1389BCS8 (I
R
= 0.8µA) ●1.24762 1.250 1.25237 V
–0.19 0.19 %
Reverse Breakdown Change 0.8µA ≤ I
R
≤ 200µA 0.20 0.4 mV
with Current (Note 4) ●0.20 1.0 mV
200µA ≤ I
R
≤ 2mA 0.3 1.0 mV
●0.3 2.0 mV
Minimum Operating Current ●0.6 µA
Temperature Coefficient LT1389ACS8 (I
R
= 0.8µA) ●4 10 ppm/°C
LT1389BCS8 (I
R
= 0.8µA) ●4 20 ppm/°C
Reverse Dynamic Impedance (Note 5) 0.8µA ≤ I
R
≤ 2mA 0.25 0.7 Ω
●0.25 1.5 Ω
Low Frequency Noise (Note 6) I
R
= 0.8µA, 0.1Hz ≤ f ≤ 10Hz 25 µV
P-P
1.25V ELECTRICAL CHARACTERISTICS
1389B4
1389B5
PACKAGE/ORDER I FOR ATIO
UU
W
ABSOLUTE AXI U RATI GS
WWWU
3
LT1389
PARAMETER CONDITIONS MIN TYP MAX UNITS
Reverse Breakdown Voltage LT1389BCS8 (I
R
= 0.9µA) 2.49875 2.500 2.50125 V
–0.05 0.05 %
LT1389BCS8 (I
R
= 0.9µA) ●2.49525 2.500 2.50475 V
–0.19 0.19 %
Reverse Breakdown Change 0.9µA ≤ I
R
≤ 200µA 0.2 0.5 mV
with Current (Note 4) ●0.2 1.5 mV
200µA ≤ I
R
≤ 2mA 0.3 1.0 mV
●0.3 2.5 mV
Minimum Operating Current ●0.7 µA
Temperature Coefficient I
R
= 0.9µA●8 20 ppm/°C
Reverse Dynamic Impedance (Note 5) 0.9µA ≤ I
R
≤ 2mA 0.25 0.75 Ω
●0.25 2 Ω
Low Frequency Noise (Note 6) I
R
= 0.9µA, 0.1Hz ≤ f ≤ 10Hz 50 µV
P-P
2.5V ELECTRICAL CHARACTERISTICS
The ● denotes specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. (Note 3)
PARAMETER CONDITIONS MIN TYP MAX UNITS
Reverse Breakdown Voltage LT1389BCS8 (I
R
= 1.5µA) 4.09293 4.096 4.09907 V
–0.075 0.075 %
LT1389BCS8 (I
R
= 1.5µA) ●4.0788 4.096 4.1132 V
–0.42 0.42 %
Reverse Breakdown Change 1.5µA ≤ I
R
≤ 200µA 0.2 1.5 mV
with Current (Note 4) ●0.2 3 mV
200µA ≤ I
R
≤ 2mA 0.3 4 mV
●0.3 6 mV
Minimum Operating Current ●1µA
Temperature Coefficient I
R
= 1.5µA●12 50 ppm/°C
Reverse Dynamic Impedance (Note 5) 1.5µA ≤ I
R
≤ 2mA 0.75 2 Ω
●0.75 3 Ω
Low Frequency Noise (Note 6) I
R
= 1.5µA, 0.1Hz ≤ f ≤ 10Hz 80 µV
P-P
4.096V ELECTRICAL CHARACTERISTICS
The ● denotes specifications which apply over the full
operating temperature range, otherwise specifications are at TA = 25°C. (Note 3)
4
LT1389
PARAMETER CONDITIONS MIN TYP MAX UNITS
Reverse Breakdown Voltage LT1389BCS8 (I
R
= 1.5µA) 4.99625 5.000 5.00375 V
–0.075 0.075 %
LT1389BCS8 (I
R
= 1.5µA) ●4.979 5.000 5.021 V
–0.42 0.42 %
Reverse Breakdown Change 1.5µA ≤ I
R
≤ 200µA 0.2 1.5 mV
with Current (Note 4) ●0.2 3 mV
200µA ≤ I
R
≤ 2mA 0.3 4 mV
●0.3 6 mV
Minimum Operating Current ●1µA
Temperature Coefficient I
R
= 1.5µA●12 50 ppm/°C
Reverse Dynamic Impedance (Note 5) 1.5µA ≤ I
R
≤ 2mA 0.75 2 Ω
●0.75 3 Ω
Low Frequency Noise (Note 6) I
R
= 1.5µA, 0.1Hz ≤ f ≤ 10Hz 100 µV
P-P
5V ELECTRICAL CHARACTERISTICS
The ● denotes specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. (Note 3)
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: If the part is stored outside of the specific operating temperature
range, the output may shift due to hysteresis.
Note 3: ESD (Electrostatic Discharge) sensitive device. Use proper ESD
handling precautions.
Note 4: Output requires 0.1µF for operating current greater than 1mA.
Note 5: This parameter is guaranteed by “reverse breakdown change with
current” test.
Note 6: Peak-to-peak noise is measured with a single highpass filter at
0.1Hz and 2-pole lowpass filter at 10Hz.
5
LT1389
Reverse Characteristics Reverse Voltage Change
vs Current
Dynamic Impedance vs Frequency Forward CharacteristicsReverse Dynamic Impedance
0.1Hz to 10Hz Noise
200ms/DIV
I
R
= 0.8µA
C
OUT
= 0.1µF
Response Time
0V
1ms/DIV 1389-1.25 G08
0V
Response Time
REVERSE VOLTAGE (V)
0
REVERSE CURRENT (µA)
0.4
0.6
1.6
1389-1.25 G01
0.2
00.4 0.8 1.2
1.0
0.8
T
A
= –40°C TO 85°C
TEMPERATURE (°C)
–40
REFERENCE VOLTAGE CHANGE (mV)
1.5
20
1389-1.25 G02
0
–1.0
–20 0 40
–1.5
–2.0
2.0
1.0
0.5
–0.5
60 80
I
R
= 250µA
I
R
= 0.8µA
Temperature Drift
FREQUENCY (kHz)
0.1
DYNAMIC IMPEDANCE (kΩ)
1
10
100
0.1 1 10
1389-1.25 G05
0.01
0.01
I
R
= 0.8µA
C
OUT
= 0µFI
R
= 0.8µA
C
OUT
= 0.047µF
I
R
= 10µA
C
OUT
= 0.1µF
I
R
= 10µA
C
OUT
= 0µF
T
A
= 25°C
TIME (SEC)
0
NOISE VOLTAGE (µV/DIV)
5
15
25
40
1389-1.25 G07
–5
–15
0
10
20
–10
–20
–25 10 20 30 50 7060
I
R
= 0.8µA
1.25V TYPICAL PERFOR A CE CHARACTERISTICS
UW
1.5V
1V
0.5V
5V
I
R
= 0.8µA
C
OUT
= 0µF
1.5V
1V
0.5V
0V
5V
0V
1389-1.25 G09
FORWARD CURRENT (mA)
0.001
0.4
FORWARD VOLTAGE (V)
0.5
0.6
0.7
0.8
0.01 0.1 1 10 100
1389-1.25 G06
0.3
0.2
0.1
0
0.9
1.0 T
A
= 25°C
REVERSE CURRENT (mA)
0.001
0.1
DYNAMIC IMPEDANCE (Ω)
10
1000
0.10.01 101
1389-1.25 G04
1
100
TA = 25°C
f = 25Hz
REVERSE CURRENT (mA)
0.4
REVERSE VOLTAGE CHANGE (mV)
0.8
1.2
0.001 0.1 101
1389-1.25 G03
0
0.6
1.0
0.2
0.01
25°C
85°C
–40°C
6
LT1389
Reverse Characteristics Reverse Voltage Change
vs Current
Dynamic Impedance vs Frequency Forward CharacteristicsReverse Dynamic Impedance
0.1Hz to 10Hz Noise
200ms/DIV
I
R
= 0.9µA
C
OUT
= 0.1µF
Response Time
0V
1ms/DIV 1389-2.5 G08
Response Time
Temperature Drift
3V
I
R
= 0.9µA
C
OUT
= 0µF
3V
2V
1V
0V
5V
0V
1389-2.5 G09
2.5V TYPICAL PERFOR A CE CHARACTERISTICS
UW
REVERSE VOLTAGE (V)
0
REVERSE CURRENT (nA)
400
600
1.6 2.0 2.4 2.8
1389-2.5 G01
200
00.4 0.8 1.2
1000
800
T
A
= –40°C TO 85°C
TEMPERATURE (°C)
–40
REVERSE VOLTAGE CHANGE (mV)
3.0
0
1389-2.5 TA02
0
–2.0
–20 20
–3.0
–4.0
4.0
2.0
1.0
–1.0
40 60 80
I
R
= 0.9µA
I
R
= 250µA
REVERSE CURRENT (mA)
0.4
REVERSE VOLTAGE CHANGE (mV)
0.8
1.2
0.001 0.1 1 10
1389-2.5 G03
0
1.6
2.0
0.01
–40°C
25°C
85°C
REVERSE CURRENT (mA)
0.001
0.1
DYNAMIC IMPEDANCE (Ω)
10
1000
0.10.01 101
1389-2.5 G04
1
100
T
A
= 25°C
f = 25Hz
FREQUENCY (kHz)
0.1
DYNAMIC IMPEDANCE (kΩ)
1
10
100
0.1 1 10
1389-2.5 G05
0.01
0.01
I
R
= 0.9µA
C
OUT
= 0.033µF
I
R
= 0.9µA
C
OUT
= 0µF
I
R
= 10µA
C
OUT
= 0µF
T
A
= 25°C
I
R
= 10µA
C
OUT
= 0.22µF
FORWARD CURRENT (mA)
0.001
0.4
FORWARD VOLTAGE (V)
0.5
0.6
0.7
0.8
0.01 0.1 1 10 100
1389-2.5 G06
0.3
0.2
0.1
0
0.9
1.0 T
A
= 25°C
TIME (SEC)
0
NOISE VOLTAGE (µV/DIV)
20
60
100
40
1389-2.5 G07
–20
–60
0
40
80
–40
–80
–100 10 20 30 50 7060
I
R
= 0.9µA
5V
0V
1V
2V
7
LT1389
Reverse Characteristics Reverse Voltage Change
vs Current
Dynamic Impedance vs Frequency Forward CharacteristicsReverse Dynamic Impedance
200ms/DIV
I
R
= 1.5µA
C
OUT
= 0.1µF
Response Time
2ms/DIV 1389-4 G08
Response Time
Temperature Drift
4V
I
R
= 1.5µA
C
OUT
= 0µF
4V
0V
10V
0V
1389-4 G09
10V
0V
0V
4.096V TYPICAL PERFOR A CE CHARACTERISTICS
UW
REVERSE VOLTAGE (V)
0
0
REVERSE CURRENT (nA)
200
600
800
1000
1.0 2.0 2.5 4.5
1389-4 G01
400
0.5 1.5 3.0 3.5 4.0
T
A
= –40°C TO 85°C
TEMPERATURE (°C)
–40
REFERENCE VOLTAGE CHANGE (mV)
6
20
1389-4 G02
0
–4
–20 0 40
–6
–8
8
4
2
–2
60 80
I
R
= 250µA
I
R
= 1.5µA
FORWARD CURRENT (mA)
0.001
0.4
FORWARD VOLTAGE (V)
0.5
0.6
0.7
0.8
0.01 0.1 1 10 100
1389-4 G06
0.3
0.2
0.1
0
0.9
1.0 T
A
= 25°C
REVERSE CURRENT (mA)
0.8
REVERSE VOLTAGE CHANGE (mV)
1.6
2.0
0.001 0.1 101
1389-4 G03
0
1.2
0.4
0.01
25°C
85°C
–40°C
REVERSE CURRENT (mA)
0.001
0.1
DYNAMIC IMPEDANCE (Ω)
10
1000
0.10.01 101
1389-4 G04
1
100
TA = 25°C
f = 25Hz
FREQUENCY (kHz)
0.1
DYNAMIC IMPEDANCE (kΩ)
1
10
100
0.1 1 10
1389-4 G05
0.01
0.01
I
R
= 1.5µA
C
OUT
= 0µF
I
R
= 10µA
C
OUT
= 0.68µF
I
R
= 10µA
C
OUT
= 0µF
T
A
= 25°C
I
R
= 1.5µA
C
OUT
= 0.047µF
8
LT1389
Reverse Characteristics Reverse Voltage Change
vs Current
Dynamic Impedance vs Frequency Forward CharacteristicsReverse Dynamic Impedance
200ms/DIV
I
R
= 1.5µA
C
OUT
= 0.1µF
Response Time
0V
2ms/DIV 1389-5 G08
Response Time
Temperature Drift
4V
I
R
= 1.5µA
C
OUT
= 0µF
4V
2V
0V
10V
0V
1389-5 G09
10V
0V
2V
5V TYPICAL PERFOR A CE CHARACTERISTICS
UW
REVERSE VOLTAGE (V)
0
0
REVERSE CURRENT (nA)
200
600
800
1000
1.0 2.0 2.5 4.5 5.0 5.5
1389-4 G01
400
0.5 1.5 3.0 3.5 4.0
T
A
= –40°C TO 85°C
TEMPERATURE (°C)
–40
REFERENCE VOLTAGE CHANGE (mV)
6
20
1389-5 G02
0
–4
–20 0 40
–6
–8
8
4
2
–2
60 80
I
R
= 250µA
I
R
= 1.5µA
FORWARD CURRENT (mA)
0.001
0.4
FORWARD VOLTAGE (V)
0.5
0.6
0.7
0.8
0.01 0.1 1 10 100
1389-5 G06
0.3
0.2
0.1
0
0.9
1.0 T
A
= 25°C
REVERSE CURRENT (mA)
0.8
REVERSE VOLTAGE CHANGE (mV)
1.6
2.0
0.001 0.1 101
1389-4 G03
0
1.2
0.4
0.01
85°C
–40°C
25°C
REVERSE CURRENT (mA)
0.001
0.1
DYNAMIC IMPEDANCE (Ω)
10
1000
0.10.01 101
1389-5 G04
1
100
TA = 25°C
f = 25Hz
FREQUENCY (kHz)
0.1
DYNAMIC IMPEDANCE (kΩ)
1
10
100
0.1 1 10
1389-4 G05
0.01
0.01
I
R
= 1.5µA
C
OUT
= 0µF
I
R
= 10µA
C
OUT
= 0.1µF
I
R
= 10µA
C
OUT
= 0µF
T
A
= 25°C
I
R
= 1.5µA
C
OUT
= 0.047µF
9
LT1389
The reverse characteristics of the LT1389 resembles a
simple resistor Zener diode parallel connection. This well
behaved characteristic is important to the proper opera-
tion of circuits like Figure 1. The adjustable output voltage
reference depends upon positive feedback from the
LT1495’s output to start-up and regulate the bias current
for the LT1389. The LT1389 has no negative resistance
regions that can interfere with the proper start-up of the
buffered reference.
Board leakage is a concern for a nanopower precision
shunt voltage reference. The LT1389 requires attention to
detail in board layout in order to maximize its perfor-
mance. 1.5GΩ of leakage between a DNC pin and a 5V
supply will conduct 2.5nA which induces a 0.2% error in
V
OUT
. Board leakage can be minimized by encircling the
DNC pins with a guard ring operated at a potential of V
OUT
.
By tying the guard ring to V
OUT
as shown in Figure 2,
leakage paths are eliminated.
–
+
LT1495
LT1389-1.25
V
IN
≥ 10.5V
R1
249k TO 8.66M
R2
1.24M
1389 F01
V
OUT
1.5V TO 10V
R
B
=V
OUT
– 1.25V
0.8µA
Figure 1. Adjustable Output Voltage Reference
1
2
3
4
8
7
6
5
DNC
DNC
DNC
GND
DNC
DNC
V
OUT
GND
BOARD METAL TRACE
LT1389
1389 F02
Figure 2. Guard Ring to Reduce Board Leakage
APPLICATIO S I FOR ATIO
WUUU
10
LT1389
+
–
+
LT1495
10k
1k10k
V
IN
≥ 3V
100k 20µF*
*WET SLUG TANTALUM
1389 TA04
510k
+
20µF*LT1389-2.5
1µF
2.5V
–
+
LT1389-1.25
1389 TA03
COMI
OUT
= 1µA
R1 TO R3: MAR5 SERIES, IRC (512) 992-7900
V
OUT
= 1.5V
R4
300k
5%
R1
200k
0.1%
R2
1M
0.1%
R3
249k
0.1%
2 AAA
ALKALINE
CELLS
1/2 LT1495
–
+
1/2 LT1495
ZTX214C
2.5V Output, Low Noise Reference
Micropower Voltage and Current Reference
TYPICAL APPLICATIO S
U
11
LT1389
Dimensions in inches (millimeters) unless otherwise noted.
S8 Package
8-Lead Plastic Small Outline (Narrow 0.150)
(LTC DWG # 05-08-1610)
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen-
tation that the interconnection of its circuits as described herein will not infringe on existing patent rights.
0.016 – 0.050
(0.406 – 1.270)
0.010 – 0.020
(0.254 – 0.508)× 45°
0°– 8° TYP
0.008 – 0.010
(0.203 – 0.254)
SO8 1298
0.053 – 0.069
(1.346 – 1.752)
0.014 – 0.019
(0.355 – 0.483)
TYP
0.004 – 0.010
(0.101 – 0.254)
0.050
(1.270)
BSC
1234
0.150 – 0.157**
(3.810 – 3.988)
8765
0.189 – 0.197*
(4.801 – 5.004)
0.228 – 0.244
(5.791 – 6.197)
DIMENSION DOES NOT INCLUDE MOLD FLASH. MOLD FLASH
SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE
DIMENSION DOES NOT INCLUDE INTERLEAD FLASH. INTERLEAD
FLASH SHALL NOT EXCEED 0.010" (0.254mm) PER SIDE
*
**
U
PACKAGE DESCRIPTIO
12
LT1389
1389fa LT/TP 0200 2K REV A • PRINTED IN USA
LINEAR TECHNOLOGY CORPORATION 1998
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
●
FAX: (408) 434-0507
●
www.linear-tech.com
PART NUMBER DESCRIPTION COMMENTS
LTC®1440 Micropower Comparator with Reference 3.7µA Max Supply Current, 1% 1.182V Reference,
MSOP, PDIP and SO-8 Packages
LT1460 Micropower Series Reference 0.075% Max, 10ppm/°C Max Drift, 2.5V, 5V and 10V Versions,
MSOP, PDIP, SO-8, SOT-23 and TO-92 Packages
LT1461 Micropower Precision LDO Series Reference 3ppm/°C Max Drift, 0°C to 70°C, –40°C to 85°C, –40°C to 125°C
Options in SO-8
LT1495 1.5µA Precision Rail-to-Rail Dual Op Amp 1.5µA Max Supply Current, 100pA Max I
OS
LTC1540 Nanopower Comparator with Reference 600nA Max Supply Current, 2% 1.182V Reference,
MSOP and SO-8 Packages
LT1634 Micropower Precision Shunt Voltage Reference 0.05% Max, 10ppm/°C Max Drift, 1.25V, 2.5V, 4.096V, 5V,
10µA Maximum Supply Current
LTC1798 6µA Low Dropout Series Reference Available in Adjustable, 2.5V, 3V, 4.096V and 5V
RELATED PARTS
Single Cell Li-Ion Battery Supervisory Circuit, IQ = 10µA
R
H1
10M
5%
R
SW
1M
5%
R
S
620k
5%
R3
1.75M
0.1%
T0 LOAD
SW
OFF
V
BAT
R4
1.25M
0.1%
D1
A BATTERY
R
H2
10M
5%
R1
500k
0.1%
R2
1.25M
0.1%
LT1389-1.25
D2
V
BAT
1.75V
1.25V
1389 TA05
–
+
A2
1/4 LT1496
–
+
A4
1/4 LT1496
–
+
–
+
A3
1/4 LT1496
A1
1/4 LT1496
CHARGER
D1, D2: 1N458
R1 TO R4: CAR6 SERIES IRC (512) 992-7900
SW: PMOS SPECIFIED FOR MAXIMUM LOAD CURRENT
Precision Undervoltage Lockout Circuit
–
+
U2
LT1389
1.250V
U1
1/2 LT1495
SW1
R4
150k
1%
R3
2.05M
1%
R2
3M
0.1%
R1
3.57M
0.1%
Li-Ion
CELL
4.1V
A
B
V
BATT
TO
LOAD
R1, R2: IRC CAR6 SERIES
(512) 992-7900
SW1: PMOS SPECIFIED FOR
MAXIMUM LOAD CURRENT
R
SW
1M
5%
R5
10M
5%
1389 TA06
TYPICAL APPLICATIO S
U
