SC251 Ver la hoja de datos (PDF) - Semtech Corporation
Número de pieza
componentes Descripción
Lista de partido
SC251 Datasheet PDF : 19 Pages
| |||
SC251
POWER MANAGEMENT
Absolute Maximum Ratings
Exceeding the specifications below may result in permanent damage to the device or device malfunction. Operation outside of the parameters specifed in the
Electrical Characteristics section is not recommended.
Parameter
Symbol
Maximum
Units
Input Supply Voltage
Logic Inputs/Outputs
(EN, VMODE, VDAC, GD)
Output Voltage
LX Voltage
Thermal Impedance Junction to Ambient(1)
VOUT Short-Circuit to GND
Operating Ambient Temperature Range
Storage Temperature
Maximum Junction Temperature
Peak IR Reflow Temperature
ESD Protection Level(2)
VIN
VN
VOUT
VLX
θJA
tSC
TA
TS
TJ
TLEAD
VESD
-0.3 to 7
-0.3 to VIN +0.3 ,7V Max
-0.3 to VIN +0.3 ,7V Max
-1 to VIN +1, 7V Max
49
Continuous
-40 to +85
-60 to +160
-40 to +150
260
2
V
V
V
V
°C/W
s
°C
°C
°C
°C
kV
Notes:
1. Calculated from package in still air, mounted to 3” x 4.5”, 4 layer FR4 PCB with thermal vias under exposed pad pre JESD51 standards.
2. Tested according JEDEC standard JESD22-A114-B
Electrical Characteristics
Unless otherwise noted: VIN = 4V, EN = VIN, VMODE = GND (High Power), VDAC = 1.1V, TA = -40 to 85°C. Typical values are at TA = +25°C.
Parameter
Symbol
Conditions
Min
Typ
Max
Units
Input Voltage Range
VIN
2.7
5
V
VOUT Accuracy
Line Regulation
Load Regulation (PWM)
Peak Inductor Current
Bypass FET current limit
Quiescent Current
VDAC = 0.3V, VMODE = VIN, IOUT = 20mA
0.44
0.48
0.52
VOUT
VMODE = VIN, IOUT = 60mA
3.16
3.40
3.64
V
IOUT = 200mA
1.38
1.62
1.86
VOUT LINE
VIN = 2.7V to 5V,
IOUT = 200mA, TA = -40 to 85°C
±1.2
%
VOUT LOAD
IOUT = 0A to 800mA, TA = -40 to 85°C
±0.5
%
ILX PK
1
1.7
A
IPASS
1
2.5
A
IQ NORM
IQ PASS
VDAC = 1.3V
2.5
mA
1.5
© 2006 Semtech Corp.
2
www.semtech.com
Share Link: 