SC1401 Semtech Corporation, SC1401 Datasheet - Page 5

• Manufacturer Part Number: SC1401
• Description: HIGH PERFORMANCE SYNCHRONOUS BUCK CONTROLLER WITH LDO FOR PORTABLE POWER
• Manufacturer: Semtech Corporation

November 21, 2000
ELECTRICAL CHARACTERISTICS (continued)
Unless specified: VDD1 = 12V, VDD2 = 12V V5V = 5V, SHDN = PSAVE = 5V, T
FAULT DETECTION
Thermal Shutdown Threshold
VDD1 Undervoltage Reset
Threshold
V5V Undervoltage Reset
Threshold
FB Overvoltage Reset
Threshold
FB Undervoltage Reset
Threshold
RESET Propagation Delay
IOS Undervoltage Reset
Threshold
RESET Delay Time
LOGICAL INPUTS AND OUTPUTS
Logic Input High
Logic Input Low
Input Leakage Current
Logic Output Low Voltage
© 2000 SEMTECH CORP.
PARAMETER
With respect to unloaded linear output voltage
With respect to unloaded output voltage, typ.
With respect to unloaded output voltage, typ.
Falling edge of VDD1, hysteresis = 1%
Falling edge of V5V, hysteresis = 1%
SHDN,ENABLEIO, PSAVE, SYNC
FB Over/Under Voltage condition
Typical hysteresis = +10°V
HIGH PERFORMANCE SYNCHRONOUS BUCK
CONTROLLER WITH LDO FOR PORTABLE
POWER
RESET, ISINK = 4mA
With respect to f
SHDN,ENABLEIO
Hysteresis = 1%
Hysteresis = 1%
PSAVE,SYNC
CONDITIONS
652 MITCHELL ROAD
OSC
A
= -40 °C to +85 °C. Typical values are at T
27,000 32,000 37,000
MIN
3.75
-1.0
4.2
1.8
NEWBURY PARK CA 91320
TYP
150
-10
-10
4.5
4.0
1.5
10
MAX
4.25
4.8
1.6
1.0
0.4
A
= +25°C.
SC1401
UNITS
clks
µA
°C
µs
%
%
%
V
V
V
V
5