FAN4603 Datasheet, PDF (4/12 Pages) Fairchild Semiconductor – 600mA, Fully Integrated, Buck Power Supply Module

Electrical Specifications
Unless otherwise noted, VIN = 2.5 to 5.5V, EN = VIN. TA = -40°C to +85°C, using circuit of Figure 1. Typical values are at
3.6VIN, TA = 25°C.
Symbol
Parameter
Conditions
Min. Typ. Max. Units
Power Supplies
IQ
Quiescent Current
ISD Shutdown Supply Current
VUVLO Under-Voltage Lockout Threshold
VUVHYST Under-Voltage Lockout Hysteresis
VENH Enable HIGH-Level Input Voltage
VENL Enable LOW-Level Input Voltage
VEN_HYS Enable Logic Input Hysteresis
IEN Enable Input Leakage Current
Oscillator
fOSC Oscillator Frequency⁽³⁾
Regulation
VIN = 3.6V, EN = GND
Rising VIN
EN = VIN or GND
PWM Mode
35
55
µA
0.1
2.0
µA
2.15
2.25
V
150
mV
1.05
V
0.4
V
100
mV
0.01
1.00
µA
5.4
6.0
6.6 MHz
ILOAD = 0 to 600mA
1.82V
PWM Mode
1.784
1.784
1.820
1.820
1.890
1.856
ILOAD = 0 to 600mA
1.50V
PWM Mode
1.470
1.470
1.500
1.500
1.560
1.530
ILOAD = 0 to 600mA
VO
Output Voltage Accuracy
1.30V
PWM Mode
1.274 1.300 1.352
V
1.274 1.300 1.326
ILOAD = 0 to 600mA
1.23V
PWM Mode
1.207
1.207
1.233
1.233
1.283
1.260
ILOAD = 0 to 600mA
1.00V
PWM Mode
0.975
0.975
1.000
1.000
1.050
1.025
tSS
Soft-Start Time
Protection
Rising EN to VOUT Regulation
180
300
µs
ILIM
TTSD
THYS
Peak Input Current Limit
Thermal Shutdown
Thermal Shutdown Hysteresis
850
1050 1250 mA
+150
°C
+15
°C
Note:
3. PWM frequency may be lower than specified when limited by tON-min (minimum on-time) or tOFF_min (minimum off-time), at
duty cycle extremes, but output regulation is maintained.
© 2009 Fairchild Semiconductor Corporation
FAN4603 • Rev. 1.0.1
4
www.fairchildsemi.com