FAN4860 Datasheet, PDF (4/15 Pages) Fairchild Semiconductor – 3MHz, 5V Output Synchronous TinyBoost™ Regulator

Electrical Specifications
Minimum and maximum values are at VIN=VEN=2.3V to 4.5V, TA=-40°C to +85°C; circuit of Figure 1, unless otherwise noted.
Typical values are at TA=25°C, VIN=VEN=3.6V.
Symbol
Parameter
Conditions
Min. Typ. Max. Units
IIN
VIN Input Current
Quiescent: VIN=3.6V, IOUT=0, EN=VIN
Shutdown: EN=0, VIN=3.6V
37
45
μA
0.5 1.5
ILK_OUT VOUT Leakage Current
VOUT=0, EN=0, VIN=4.2V
10
nA
ILK_RVSR VOUT to VIN Reverse Leakage
VOUT=5V, VIN=3.6V, EN=0
2.5 μA
VUVLO Under-Voltage Lockout
VIN Rising
2.2 2.3
V
VUVLO_HYS Under-Voltage Lockout Hysteresis
190
mV
VENH Enable HIGH Voltage
1.05
V
VENL Enable LOW Voltage
0.4
V
ILK_EN Enable Input Leakage Current
0.01 1
μA
VOUT VOUT Output Voltage Accuracy⁽¹⁾
VIN from 2.3V to 4.5V, IOUT≤200mA
VIN from 2.7V to 4.5V, IOUT≤200mA
4.80 5.05 5.15
4.85 5.05 5.15 V
VIN from 3.3V to 4.5V, IOUT≤300mA
4.85 5.05 5.15
VREF Reference Accuracy
Referred to VOUT
4.975 5.050 5.125 V
tOFF Off Time
VIN=3.6V, IOUT=200mA
195 240 265 ns
IOUT Maximum Output Current⁽²⁾
VIN=2.3V, VOUT=5V
VIN=3.3V, VOUT=5V
200
300
mA
VIN=3.6V, VOUT=5V
400
ISW SW Peak Current Limit
VIN=3.6V, VOUT>VIN
ISS
Soft-Start Input Peak Current Limit⁽²⁾ VIN=3.6V, VOUT < VIN
930 1100 1320 mA
850
mA
tSS Soft-Start Time
VIN=3.6V, IOUT=200mA
Time=Rising EN until Regulated VOUT
100 300 μs
RDS(ON)
N-Channel Boost Switch
P-Channel Sync Rectifier
VIN=3.6V
VIN=3.6V
300
mΩ
400
TTSD Thermal Shutdown
ILOAD=10mA
150
°C
TTSD_HYS Thermal Shutdown Hysteresis
30
°C
Notes:
1. ILOAD from 0 to IOUT; also includes load transient response. VOUT measured from mid-point of output voltage ripple.
Effective capacitance of COUT > 1.5μF.
2. Guaranteed by design and characterization; not tested in production.
© 2009 Fairchild Semiconductor Corporation
FAN4860 • Rev. 1.0.3
4
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