© Semiconductor Components Industries, LLC, 2015
October, 2019 Rev. 2
1Publication Order Number:
FAN48630J/D
Synchronous Regulator
with Bypass Mode,
TINYBOOST®,
2.5 MHz, 1500 mA
FAN48630J
Description
The FAN48630J allows systems to take advantage of new battery
chemistries that can supply significant energy when the battery
voltage is lower than the required voltage for system power ICs. By
combining builtin power transistors, synchronous rectification, and
low supply current; this IC provides a compact solution for systems
using advanced LiIon battery chemistries.
The FAN48630J is a boost regulator designed to provide a minimum
output voltage (VOUT(MIN)) from a singlecell LiIon battery, even
when the battery voltage is below system minimum. Output voltage
regulation is guaranteed to a maximum load current of 1500 mA.
Quiescent current in Shutdown Mode is less than 3 mA, which
maximizes battery life. The regulator transitions smoothly between
Bypass and normal Boost Mode. The device can be forced into Bypass
Mode to reduce quiescent current.
The FAN48630J is available in a 16bump, 0.4 mm pitch,
WaferLevel ChipScale Package (WLCSP).
Features
3 External Components: 0.47 mH Inductor and 0603 Case Size Input
and Output Capacitors
Input Voltage Range: 2.35 V to 5.5 V
Fixed Output Voltage Option: 3.15 V/3.6 V
Up to 96% Efficient
True Bypass Operation when VIN > Target VOUT
Internal Synchronous Rectifier
SoftStart with True Load Disconnect
Forced Bypass Mode
VSEL Control to Optimize Target VOUT
ShortCircuit Protection
Low Operating Quiescent Current
16Bump, 0.4 mm Pitch WLCSP
Applications
Boost for LowVoltage Liion Batteries, Brownout Prevention,
Boosted Audio, USB OTG, and LTE / 3G RF Power
Cell Phones, Smart Phones, Portable Instruments
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See detailed ordering and shipping information on page 2 of
this data sheet.
ORDERING INFORMATION
WLCSP16 1.78x1.78x0.586
CASE 567SY
MARKING DIAGRAM
Figure 1. Typical Application
VOUT
PGND
COUT
L1
PG
VIN
SW
VSEL
EN
BYP
CIN
+
Battery SYSTEM
LO AD
AGND
0.47 mH
0.47mF47 mF
FAN48630
12 = Alphanumeric Device Marking
KK = Lot Rune Code
X = Alphabetical Year Code
Y= 2weeks Date Code
Z = Assembly Plant Code
1
Pin1
Mark
2KK
XYZ
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Table 1. ORDERING INFORMATION
Part Number
Output Voltage
VSELO/VSEL1
Operating
Temperature Package Shipping
Device
Marking
FAN48630BUC31JX 3.15 V/3.60 V 40 to 85°C WLCSP Tape & Reel JH
For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging
Specifications Brochure, BRD8011/D.
TYPICAL APPLICATION
Figure 2. Typical Application Block Diagram
EN
L1
Q2
VIN
SW
CIN
GND
Q1
Q1B Q1A
PG
COUT
Q3
Q3B Q3A
VSEL
BYP
VOUT
Bypass
Control
Synchronous
Rectifier Control
Modulator Logic
and Control
Table 2. RECOMMENDED COMPONENTS
Component Description Vendor Parameter Typ. Unit
L1 0.47 mH, 30% Toko: DFE201612C
DFR201612C
Cyntec: PIFE20161B
L 0.47 mH
CIN 4.7 mF, 10%, 6.3 V, X5R, 0603 (1608) Murata: GRM188R60J475K
TDK: C1608X5R0J475K
C 4.7 mF
COUT 47 mF, 20%, 6.3 V, X5R, 0603 (1608) Samsung: CL10A476MQ8CZNE C 47
FAN48630J
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PIN CONFIGURATION
Figure 3. Top Through View (Bumps Down) Figure 4. Bottom View
AGND
VIN
VSEL
PG
AGND PGND
SW
VOUT
EN
B1 B2
C2
A1 A2
B3
A3
C3
D1 D2 D3
C1
A4
B4
C4
D4
BYP
B4
A4
D4
C4
B3
C3
D3
A3
B2
A2
C2
D2
A1
C1
D1
B1
Table 3. PIN DEFINITIONS
Pin # Name Description
A1 EN Enable. When this pin is HIGH, the circuit is enabled (Note 1).
A2 PG Power Good. This is an opendrain output. PG is actively pulled LOW if output falls out of
regulation due to overload or if thermal protection threshold is exceeded.
A3–A4 VIN Input Voltage. Connect to LiIon battery input power source.
B1 VSEL Output Voltage Select. When boost is running, this pin can be used to select output voltage.
B2, C2, D1 AGND Analog Ground. This is the signal ground reference for the IC. All voltage levels are
measured with respect to this pin.
B3–B4 VOUT Output Voltage. Place COUT as close as possible to the device.
C1 BYP Bypass. This pin can be used to activate Forced Bypass Mode. When this pin is LOW,
the bypass switches (Q3 and Q1) are turned on and the IC is otherwise inactive.
C3–C4 SW Switching Node. Connect to inductor.
D2–D4 PGND Power Ground. This is the power return for the IC. The COUT bypass capacitor should be
returned with the shortest path possible to these pins.
1. Do not connect the EN pin to VIN. A logic voltage of 1.8 V should control the EN pin and enable/disable the device.
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Table 4. ABSOLUTE MAXIMUM RATINGS
Symbol Parameter Min. Max. Unit
VIN VIN Input Voltage 0.3 6.5 V
VOUT VOUT Output Voltage 6.0 V
SW Node DC 0.3 8.0 V
Transient: 10 ns, 3 MHz 1.0 8.0 V
Other Pins 0.3 6.5
(Note 2)
V
ESD Electrostatic Discharge Protection Level Human Body Model per JESD22A114 2.0 kV
Charged Device Model per JESD22C101 1.5 kV
TJJunction Temperature 40 +150 °C
TSTG Storage Temperature 65 +150 °C
TLLead Soldering Temperature, 10 Seconds +260 °C
Stresses exceeding those listed in the Maximum Ratings table may damage the device. If any of these limits are exceeded, device functionality
should not be assumed, damage may occur and reliability may be affected.
2. Lesser of 6.5 V or VIN + 0.3 V.
Table 5. RECOMMENDED OPERATING CONDITIONS
Symbol Parameter Min. Max. Unit
VIN Supply Voltage 2.35 5.5 V
IOUT Output Current 0 1500 mA
TAAmbient Temperature 40 +85 °C
TJJunction Temperature 40 +125 °C
Functional operation above the stresses listed in the Recommended Operating Ranges is not implied. Extended exposure to stresses beyond
the Recommended Operating Ranges limits may affect device reliability.
Table 6. THERMAL PROPERTIES
Symbol Parameter Typ. Unit
θJA JunctiontoAmbient Thermal Resistance 80 °C/W
θJB JunctiontoBoard Thermal Resistance 42
Junctiontoambient thermal resistance is a function of application and board layout. This data is measured with fourlayer Fairchild evaluation
boards (1 oz copper on all layers). Special attention must be paid not to exceed junction temperature TJ(max) at a given ambient temperate TA.
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Table 7. ELECTRICAL CHARACTERISTICS Recommended operating conditions, unless otherwise noted, circuit
per Figure 1, VIN = 2.35 V to 5.5 V, TA = 40°C to 85°C. Typical values are given at VIN = 3.0 V and TA = 25°C.
Symbol Parameter Condition Min. Typ. Max. Unit
IQVIN Quiescent Current Bypass Mode VOUT = 3.15 V,
VIN = 4.2 V
140 190 mA
Boost Mode VOUT = 3.15 V,
VIN = 2.5 V
150 250 mA
Shutdown: EN = 0, VIN = 3.0 V 1.5 5.0 mA
Forced Bypass Mode, VIN = 3.5 V 4 10 mA
ILK VOUT to VIN Reverse Leakage VOUT = 3.6 V, EN = 0 0.2 1.0 mA
ILK_OUT VOUT Leakage Current VOUT = 0, EN = 0, VIN = 4.2 V 0.1 1.0 mA
VUVLO UnderVoltage Lockout VIN Rising 2.20 2.35 V
VUVLO_HYS UnderVoltage Lockout Hystere-
sis
200 mV
VPG(OL) PG Low IPG = 5 mA 0.4 V
IPG_LK PG Leakage Current 1mA
VIH Logic Level High EN, VSEL, BYP 1.2 V
VIL Logic Level Low EN, VSEL, BYP 0.4 V
RLOW Logic Control Pin Pull Downs
(LOW Active) BYP, VSEL, EN 300 kΩ
IPD Weak Current Source PullDown BYP, VSEL, EN 100 nA
VREG Output Voltage Accuracy 2.35 V VIN VOUT_TARGET 100 mV,
DC, 0 to 1500 mA
–2 4 %
fSW Switching Frequency VIN = 2.7 V, VOUT = 3.15 V,
Load = 1000 mA
2.0 2.5 3.0 MHz
IV_LIM Boost Valley Current Limit VIN = 2.6 V 2.6 2.9 3.1 A
VOVP Output OverVoltage Protection
Threshold
6.0 6.3 V
VOVP_HYS Output OverVoltage Protection
Hysteresis
300 mV
RDS(ON)N NChannel Boost Switch RDS(ON) VIN = 3.5 V, VOUT = 3.5 V 85 120 mW
RDS(ON)P PChannel Sync Rectifier
RDS(ON)
VIN = 3.5 V, VOUT = 3.5 V 65 85 mW
RDS(ON)P_BYP PChannel Bypass Switch
RDS(ON)
VIN = 3.5 V, VOUT = 3.5 V 65 85 mW
Product parametric performance is indicated in the Electrical Characteristics for the listed test conditions, unless otherwise noted. Product
performance may not be indicated by the Electrical Characteristics if operated under different conditions.
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Table 8. SYSTEM CHARACTERISTICS
The following table is verified by design and verified while using the following external components: L = 0.47 mH, DFE201612CR47M
(Toko), CIN = 4.7 mF, 0603 (1608 metric), C1608X5R0J475K (TDK), COUT = 47mF, 0603 (1608 metric), CL10A476MQ8CZNE
(Samsung). These parameters are not verified in production. Minimum and maximum values are at VIN = 2.5 V to 5.5 V, TA = 40°C
to +85°C; circuit per Figure 1, unless otherwise noted. Typical values are at TA = 25°C, VIN = 3.0 V, VOUT = 3.6 V, VEN = 1.8 V.
Symbol Parameter Condition Min. Typ. Max. Unit
ΔVOUT_LOAD Load Regulation IOUT = 0 A to 1 A, VIN = 3.0 V 80 mV/A
ΔVOUT_LINE Line Regulation 2.7 V VIN 3.0 V, IOUT = 1 A 7 mV/V
VOUT_RIPPLE Ripple Voltage VIN = 3.0 V, VOUT = 3.6 V,
IOUT = 800 mA, PWM Mode
10 mV
VIN = 3.0 V, VOUT = 3.6 V,
IOUT = 50 mA, PFM Mode
11
ηEfficiency VIN = 2.5 V, VOUT = 3.15 V,
IOUT = 20 mA, PFM
90 %
VIN = 3.0 V, VOUT = 3.15 V,
IOUT = 500 mA, PWM
96
VIN = 3.0 V, VOUT = 3.6 V,
IOUT = 600 mA, PWM
93
TSS SoftStart EN High to 95% of Target_ VOUT.
RL = 50 W
550 ms
ΔVOUT_LOAD_TRX Load Transient VIN = 3.0 V, IOUT = 0.5 A 1 A,
TR = TF = 1 ms"95 mV
ΔVOUT_LINE_TRX Line Transient VIN = 2.5 V 3.0 V,
TR = TF = 10 ms, IOUT = 300 mA "15 mV
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TYPICAL CHARACTERISTICS
Unless otherwise specified; VIN = 3.0 V, VOUT = 3.6 V, and TA = 25°C; circuit and components according to Figure 1.
Figure 5. Efficiency vs. Load Current and Input
Voltage
Figure 6. Efficiency vs. Load Current and
Temperature
Figure 7. Efficiency vs. Load Current and Input Voltage,
VOUT = 3.15 V
Figure 8. Efficiency vs. Load Current and
Temperature, VOUT = 3.15 V
Figure 9. Output Regulation vs. Load Current and Input
Voltage
Figure 10. Output Regulation vs. Load Current
and Temperature
2
1
0
1
2
3
0 250 500 750 1000 1250 1500
Output Regulation (%)
Load Current (mA)
40C
+25C
+85C
2
1
0
1
2
3
0 250 500 750 1000 1250 1500
Output Regulation (%)
Load Current (mA)
2.5 VIN
3.0 VIN
3.3 VIN
72%
76%
80%
84%
88%
92%
96%
100%
0 250 500 750 1000 1250 1500
Efficiency
Load Current (mA)
2.5 VIN
3.0 VIN
3.3 VIN
76%
80%
84%
88%
92%
96%
100%
0 250 500 750 1000 1250 1500
Efficiency
Load Current (mA)
40C
+25C
+85C
76%
80%
84%
88%
92%
96%
100%
0 250 500 750 1000 1250 1500
2.5 VIN
3.0 VIN
3.3 VIN 80%
84%
88%
92%
96%
100%
0 250 500 750 1000 1250 1500
Efficiency
Load Current (mA)
40C
+25C
+85C
Efficiency
Load Current (mA)
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TYPICAL CHARACTERISTICS (CONTINUED)
Unless otherwise specified; VIN = 3.0 V, VOUT = 3.6 V, and TA = 25°C; circuit and components according to Figure 1.
Figure 11. Quiescent Current vs. Input Voltage and
Temperature, VOUT = 3.15 V, Auto Mode
Figure 12. Quiescent Current vs. Input Voltage and
Temperature, VOUT = 3.15 V, Forced Bypass Mode
Figure 13. Output Ripple vs. Load Current and Input
Voltage
Figure 14. Frequency vs. Load Current and Input
Voltage
Figure 15. Startup, 50 Load Figure 16. Startup, 50 Load, VIN = 2.5 V, VOUT = 3.15 V
0
50
100
150
200
250
2.0 2.5 3.0 3.5 4.0 4.5
Input Voltage (V)
40C Auto
+25C Auto
+85C Auto
0
4
8
12
16
20
2.0 2.5 3.0 3.5 4.0 4.5
Input Voltage (V)
40C Bypass
+25C Bypass
+85C Bypass
0
10
20
30
0 250 500 750 1000 1250 1500
Output Ripple (mVpp)
Load Current (mA)
2.5 VIN
3.0 VIN
3.3 VIN
0
500
1,000
1,500
2,000
2,500
3,000
0 250 500 750 1000 1250 1500
Switching Frequency (KHz)
Load Current (mA)
2.5 VIN
3.0 VIN
3.3 VIN
IL (500mA/div)
VOUT (2V/div)
EN (2V/div)
PG (5V/div)
IL (500mA/div)
VOUT (1V/div)
EN (2V/div)
PG (5V/div)
Input Current (
Input Current (
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TYPICAL CHARACTERISTICS (CONTINUED)
Unless otherwise specified, VIN = 3.0 V; VOUT = 3.6 V, and TA = 25°C; circuit and components according to Figure 1.
Figure 17. Load Transient, IOUT = 500 1000 mA,
1 s Edge
Figure 18. Load Transient, IOUT = 100 500 mA,
1 s Edge, VOUT = 3.15 V
Figure 19. Line Transient, VIN = 3.0 V 3.6 V,
10 s Edge, IOUT = 500 mA, VOUT = 3.15 V
Figure 20. Line Transient, VIN = 2.5 V 3.0 V,
10 s Edge, IOUT = 300 mA
Figure 21. VSEL Step, VIN = 3 V, VOUT = 3.15 V3.6 V,
IOUT = 500 mA
IOUT (500mA/div)
VOUT (100mV/div)
IOUT (500mA/div)
VOUT (100mV/div)
VOUT (200mV/div)
VIN(200mV/div)
VOUT (50mV/div)
VIN(200mV/div)
VOUT (200mV/div)
VSEL (2V/div)
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CIRCUIT DESCRIPTION
FAN48630J is a synchronous boost regulator, typically
operating at 2.5 MHz in Continuous Conduction Mode
(CCM), which occurs at moderate to heavy load current and
low VIN voltages. The regulator includes a Bypass Mode
that activates when VIN is above the boost regulators
setpoint.
In anticipation of a heavy load transition, the setpoint can
be adjusted upward by fixed amounts with the VSEL pin to
reduce the required system headroom during lighterload
operation to save power.
Table 9. Operating States
Mode Description Invoked When
LIN Linear Startup VIN > VOUT
SS Boost SoftStart VOUT < VOUT(MIN)
BST Boost Operating Mode VOUT = VOUT(MIN)
BPS True Bypass Mode VIN > VOUT(MIN)
Boost Mode
The FAN48630J uses a currentmode modulator to
achieve excellent transient response and smooth transitions
between CCM and Discontinuous Conduction Mode
(DCM) operation. During CCM operation, the device
maintains a switching frequency of about 2.5 MHz.
In lightload operation (DCM), frequency is reduced to
maintain high efficiency.
Table 10. Boost Startup Sequence
Start
State Entry Exit End State
Timeout
(s)
LIN1 VIN >
UVLO,
EN = 1
VOUT >
VIN300 mV
SS
LIN2 512
LIN2 LIN1 Exit VOUT >
VIN300 mV
SS
TIMEOUT FAULT 1024
SS LIN1 or
LIN2 Exit
VOUT =
VOUT(MIN)
BST
OVERLOAD
TIMEOUT
FAULT 64
Shutdown and Startup
If EN is LOW, all bias circuits are off and the regulator is
in Shutdown Mode. During shutdown, current flow is
prevented from VIN to VOUT, as well as reverse flow from
VOUT to VIN. During startup, it is recommended to keep DC
current draw below 500 mA.
LIN State
When EN is HIGH and VIN > UVLO, the regulator
attempts to bring VOUT within 300 mV of VIN using the
internal fixed current source from VIN (Q3). The current is
limited to LIN1 set point.
If VOUT reaches VIN300 mV during LIN1 Mode, the SS
state is initiated. Otherwise, LIN1 times out after 512 ms and
LIN2 Mode is entered.
In LIN2 Mode, the current source is incremented to 2 A.
If VOUT fails to reach VIN300 mV after 1024 ms, a fault
condition is declared.
SS State
Upon the successful completion of the LIN state
(VOUT VIN300 mV), the regulator begins switching with
boost pulses current limited to 50% of nominal level.
During SS state, VOUT is ramped up by stepping the
internal reference. If VOUT fails to reach regulation during
the SS ramp sequence for more than 64 ms, a fault condition
is declared. If large COUT is used, the reference
is automatically stepped slower to avoid excessive input
current draw.
BST State
This is a normal operating state of the regulator.
BPS State
If VIN is above VREG when the SS Mode successfully
completes, the device transitions directly to BPS Mode.
FAULT State
The regulator enters the FAULT state under any of
the following conditions:
VOUT fails to achieve the voltage required to advance
from LIN state to SS state.
VOUT fails to achieve the voltage required to advance
from SS state to BST state.
Boost current limit triggers for 2 ms during the BST
state.
VDS protection threshold is exceeded during BPS state.
VIN drops below UVLO threshold.
Once a FAULT is triggered, the regulator stops switching
and presents a highimpedance path between VIN to VOUT.
After waiting 20 ms, a restart is attempted.
Power Good
Power good is 0 FAULT, 1 POWER GOOD, opendrain
output.
The Power good pin is provided for signaling the system
when the regulator has successfully completed softstart
and no faults have occurred. Power good also functions as
an early warning flag for high die temperature and overload
conditions.
PG is released HIGH when the softstart sequence is
successfully completed.
PG is pulled LOW when PMOS current limit has
triggered for 64 ms OR the die the temperature exceeds
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120CC. PG is reasserted when the device cools below
to 100CC.
Any FAULT condition causes PG to be deasserted.
OverTemperature
The regulator shuts down when the die temperature
exceeds 150°C. Restart occurs when the IC has cooled by
approximately 20°C.
Bypass Operation
In normal operation, the device automatically transitions
from Boost Mode to Bypass Mode, if VIN goes above target
VOUT. In Bypass Mode, the device fully enhances both Q1
and Q3 to provide a very low impedance path from VIN to
VOUT. Entry to the Bypass Mode is triggered by condition
where VIN > VOUT and no switching has occurred during
past 5 ms. To soften the entry to Bypass Mode, Q3 is driven
as a linear current source for the first 5 ms. Bypass Mode exit
is triggered when VOUT reaches the target VOUT voltage.
During Automatic Bypass Mode, the device is shortcircuit
protected by voltage comparator tracking the voltage drop
from VIN to VOUT; if the drop exceeds 200 mV, FAULT is
declared.
With sufficient load to enforce CCM operation, the
Bypass Mode to Boost Mode transition occurs at the target
VOUT. The corresponding input voltage at the transition
point is:
VIN vVOUT )ILOAD * (DCRL)RDS(ON)P)ŦRDS(ON)BYP (eq. 1)
The Bypass Mode entry threshold has 25 mV hysteresis
imposed at VOUT to prevent cycling between modes. The
transition from Boost Mode to Bypass Mode occurs at the
target VOUT+25 mV. The corresponding input voltage is:
VIN wVOUT )25mV )ILOAD * (DCRL)RDS(ON)P)(eq. 2)
Forced Bypass
Entry to Forced Bypass Mode initiates with a current limit
on Q3 and then proceeds to a true bypass state. To prevent
reverse current to the battery, the device waits until output
discharges below VIN before entering Forced Bypass Mode.
After the transition is complete, most of the internal
circuitry is disabled to minimize quiescent current draw.
Shortcircuit, UVLO, output OVP and overtemperature
protections are inactive in Forced Bypass Mode.
In Forced Bypass Mode, VOUT can follow VIN below
VOUT(MIN).
VSEL
VSEL can be asserted in anticipation of a positive load
transient. Raising VSEL increases VOUT(MIN) by a fixed
amount and VOUT is stepped to the corresponding target
output voltage in 20 ms. The functionality can also be utilized
to mitigate undershoot during severe line transients, while
minimizing VOUT during more benign operating conditions
to save power.
EN
Setting the EN pin voltage below 0.4 V disables the part.
Placing the voltage above 1.2 V enables the part. Do not
connect the EN pin to VIN. A logic voltage of 1.8 V should
control the EN pin and enable / disable the device. The EN
pin should be pulled HIGH after the VIN voltage has reached
a minimum voltage of 2.3 V.
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APPLICATION INFORMATION
Output Capacitance (COUT)
Stability
The effective capacitance (CEFF) of small, highvalue,
ceramic capacitors decreases as bias voltage increases.
FAN48630J is guaranteed for stable operation with the
minimum value of CEFF (CEFF(MIN)) outlined in Table 11.
Table 11. Minimum CEFF Required for Stability
Operating Conditions
CEFF(MIN) (F
VOUT (V) ILOAD (mA)
3.15 0 to 1500 15
CEFF varies with manufacturer, material, and case size.
Inductor Selection
Recommended nominal inductance value is 0.47 mH.
FAN48630J employs valleycurrent limiting; peak
inductor current can reach 3.8 A for a short duration during
overload conditions. Saturation effects cause the inductor
current ripple to become higher under high loading as only
valley of the inductor current ripple is controlled.
A 0.33 mH inductor can be used for improved transient
performance.
Startup
Input current limiting is in effect during softstart, which
limits the current available to charge COUT and any
additional capacitance on the VOUT line. If the output fails
to achieve regulation within the limits described in the
Startup section, a FAULT occurs, causing the circuit to shut
down then restart after 20 ms. If the total combined output
capacitance is very high, the circuit may not start on the first
attempt, but eventually achieves regulation if no load is
present. If a highcurrent load and high capacitance are both
present during softstart, the circuit may fail to achieve
regulation and continually attempts softstart, only to have
the output capacitance discharged by the load when in
a FAULT state.
Output Voltage Ripple
Output voltage ripple is inversely proportional to COUT.
During tON, when the boost switch is on, all load current is
supplied by COUT. Output ripple is calculated as:
VRIPPLE(P*P) +tON *ILOAD
COUT
(eq. 3)
and
tON +tSW *D+tSW *ǒ1*VIN
VOUTǓ(eq. 4)
therefore:
VRIPPLE(P*P) +tSW *ǒ1*VIN
VOUTǓ*ILOAD
COUT
(eq. 5)
and
tSW +1
fSW
(eq. 6)
Layout Recommendations
The layout recommendations below highlight various
topcopper pours using different colors.
To minimize spikes at VOUT, COUT must be placed as
close as possible to PGND and VOUT, as shown in
Figure 22.
For thermal reasons, it is suggested to maximize the pour
area for all planes other than SW. Especially the ground pour
should be set to fill all available PCB surface area and tied
to internal layers with a cluster of thermal vias.
Fi
g
ure 22. To
p
La
y
er
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Figure 23. Layer 2
Figure 24. Layer 3
Table 12. PRODUCTSPECIFIC DIMENSIONS
Product D E X Y
FAN48630BUC31JX 1.780 ±0.030 1.780 ±0.030 0.290 0.290
TINYBOOST is registered trademark of Semiconductor Components Industries, LLC (SCILLC) or its subsidiaries in the United States and/or other countries.
FAIRCHILD is registered trademark of Semiconductor Components Industries, LLC (SCILLC) or its subsidiaries in the United States and/or other countries.
WLCSP16 1.78x1.78x0.586
CASE 567SY
ISSUE O
DATE 30 NOV 2016
MECHANICAL CASE OUTLINE
PACKAGE DIMENSIONS
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