SC1401 Semtech Corporation, SC1401 Datasheet - Page 3

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

November 21, 2000
ABSOLUTE MAXIMUM RATINGS
PARAMETER
VDD1 to GND
PGND to GND
V5V, FB, CSH, CSL, IOS to GND
SYNC, SHDN, PSAVE, ENABLEIO to GND
BST to GND
BST to PHASE
VDD2 to GND
GATEIO to GND
Junction operating temperature (T
Thermal resistance junction to ambient (
Storage temperature
Lead soldering temperature
ELECTRICAL CHARACTERISTICS
PARAMETER
SMPS CONTROLLER
VDD1 Input Voltage Range
VOUT SMPS
Internal BandGap Voltage, VREF
Load Regulation
Line Regulation
Overcurrent-Limit Threshold
PSAVE Mode Threshold
Soft-Start Ramp Time
Oscillator Frequency
Maximum Duty Factor
Note 1: This device is ESD sensitive. Use of standard ESD handling precautions is required.
© 2000 SEMTECH CORP.
Unless specified: VDD1 = 12V, VDD2 = 12V V5V = 5V, SHDN = PSAVE = 5V, T
J
)
From enable to 95% full current limit with
JA
Measured at the Feedback pin
HIGH PERFORMANCE SYNCHRONOUS BUCK
CONTROLLER WITH LDO FOR PORTABLE
POWER
0mV < CSH - CSL < 100mV
)
CSH - CSL, PSAVE = 0 V
6V < VDD1 < 30V
CONDITIONS
respect to f
SYNC = V5V
SYNC = V5V
SYNC = 0V
SYNC = 0V
CSH - CSL
+300, 10 seconds
-40 to +125
-0.3 to +36
-65 to +150
MAXIMUM
-0.3 to +36
-0.3 to +36
- 0.3 to 0.3
-0.3 to +6
-0.3 to +6
-0.3 to 6
652 MITCHELL ROAD
OSC
50
9
A
= -40 °C to +85 °C . Typical values are at T
VREF
1.225
MIN
100
265
165
UNITS
6.0
85
90
°C/W
°C
°C
°C
V
V
V
V
V
V
V
V
NEWBURY PARK CA 91320
1.250
TYP
0.03
130
512
300
200
30
87
93
2
1.275
MAX
30.0
160
335
235
5.5
SC1401
A
= +25°C.
UNITS
%/V
clks
kHz
mV
mV
%
%
V
V
V
3