FAN48632 Datasheet, PDF (5/13 Pages) Fairchild Semiconductor – 2.5 MHz, 2.0 A Pulsed-Load Synchronous TinyBoost

Electrical Specifications
Recommended operating conditions, unless otherwise noted, circuit per Figure 1, VIN = 2.35 V to VOUT, TA = -40˚C to 85˚C.
Typical values are given VIN = 3.0 V and TA = 25˚C.
Symbol
IQ
ILK
ILK_OUT
VUVLO
VUVLO_HYS
VPG(OL)
IPG_LK
VIH
VIL
RLOW
IPD
VREG
VTRSP
tON
fSW
IV_LIM
IV_LIM_SS
ISS_PK
tSS
VOVP
VOVP_HYS
RDS(ON)N
RDS(ON)P
RDS(ONBYP
T120A
T120R
T150T
T150H
tRST
Parameter
VIN Quiescent Current
VOUT to VIN Reverse Leakage
VOUT Leakage Current
Under-Voltage Lockout
Under-Voltage Lockout Hysteresis
PG Low
PG Leakage Current
Logic Level High EN, VSEL, BYP
Logic Level Low EN, VSEL, BYP
Logic Control Pin Pull Downs
(LOW Active)
Weak Current Source Pull-Down
Output Voltage Accuracy
Load Transient Response
On-Time
Switching Frequency
Boost Valley Current Limit
Boost Valley Current Limit During
SS
Soft-Start Input Current Limit
Soft-Start EN HIGH to Regulation
Output Over-Voltage Protection
Threshold
Output Over-Voltage Protection
Hysteresis
N-Channel Boost Switch RDS(ON)
P-Channel Sync Rectifier RDS(ON)
P-Channel Bypass Switch RDS(ON)
T120 Activation Threshold
T120 Release Threshold
T150 Threshold
T150 Hysteresis
FAULT Restart Timer
Conditions
Bypass Mode VOUT=3.5 V, VIN=4.2 V
Boost Mode VOUT=3.5 V, VIN=2.5 V
Shutdown: EN=0, VIN=3.0 V
Forced Bypass Mode,
VIN=3.5 V
Low IQ
VOUT=5 V, EN=0
VOUT=0, EN=0, VIN=4.2 V
VIN Rising
IPG=5 mA
VPG=5 V
BYP, VSEL, EN
BYP, VSEL, EN
Target VOUT relative to GND, DC,
VOUT-VIN > 100 mV
500 – 1250 mA, VIN=3.0 V
VIN=3.0 V, VOUT=3.5 V, Load >1 A
VIN=3.0 V, VOUT=3.5 V, Load=1 A
VIN=2.6 V
VIN=2.6 V
LIN1
Fast
LIN2
Fast
Fast, 50  Load
VIN=3.5 V
VIN=3.5 V
VIN=3.5 V
Min.
1.2
Typ.
140
150
1.5
4
0.2
0.1
2.20
200
Max.
190
250
5.0
Unit
A
A
A
10 A
1.0 A
1.0 A
2.35 V
mV
0.4
V
1
µA
V
0.4
V
300
k
100
nA
–2
4
%
±4
%
80
ns
2.0
2.5
3.0 MHz
3.3
3.7
4.1
A
1.8
A
900
mA
1800
mA
600
s
6.0
6.3
V
300
mV
85
120 mΩ
65
85 mΩ
65
85 mΩ
120
°C
100
°C
150
°C
20
°C
20
ms
© 2013 Fairchild Semiconductor Corporation
FAN48632 • Rev. 1.0.3
5
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