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PDF SC1462 Data sheet ( Hoja de datos )
| Número de pieza | SC1462 | |
| Descripción | HIGH OUTPUT CURRENT CHARGE PUMP DOUBLER | |
| Fabricantes | Semtech Corporation | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de SC1462 (archivo pdf) en la parte inferior de esta página. Total 9 Páginas | ||
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HIGH OUTPUT CURRENT
CHARGE PUMP DOUBLER
SC1462
October 20, 2000
TEL:805-498-2111 FAX:805-498-3804 WEB:http://www.semtech.com
DESCRIPTION
The SC1462 is a versatile charge pump designed for
use in battery operated power supply applications over
the wide input range of 1.65 to 5.5 volts. A simple, low
quiescent current charge pump doubler can be imple-
mented without costly inductors or capacitors. Internal
MOSFETs and control circuitry eliminate the need for
costly board space and design time. The small 6 lead
SOT-23 package helps minimize board space.
The SC1462 charge pump can be used for applica-
tions that require up to 80mA of output current with VIN
= 2.5V to 5.5V. Typical dropout voltage (2*Vin-Vout) is
shown below for several values of Vin.
FEATURES
•= Input supply voltage range of 1.65V to 5.5V
•= Small size - 6 pin SOT-23 package
•= Typical efficiency of :
91% @ Vin = 2.5V, Iout = 45mA
94% @ Vin = 3.6V, Iout = 55mA
•= Short circuit and over-temperature protection
•= 140µA typical input current @ no load
•= Shutdown current <1µA
•= Designed to work with ceramic or Tantalum
capacitors
•= Fixed frequency of 160kHz
•= All specifications rated over full temperature
range (-40°C to 85°C)
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.0
000E+0
T ypical Dropou t Voltage vs Iou t
@Ta = 25 Deg. C.
Vin = 1.5V
Vin = 2.5V
Vin = 3.6V
Vin = 4.5V
Vin = 5.5V
20E-3
40E-3
60E-3
Iou t (A)
80E-3
100E-3
APPLICATIONS
•= Cellular phones
•= Handheld devices
ORDERING INFORMATION
DEVICE(1) PACKAGE Temp. Range (TA)
SC1462ISKTR SOT-23-6
-40°C to 85°C
Note:
(1) Only available in tape and reel packaging. A reel
contains 3000 devices.
TYPICAL APPLICATION SCHEMATIC
© 2000 SEMTECH CORP.
1
652 MITCHELL ROAD NEWBURY PARK CA 91320
1 page  
October 20, 2000
HIGH OUTPUT CURRENT
CHARGE PUMP DOUBLER
SC1462
TEL:805-498-2111 FAX:805-498-3804 WEB:http://www.semtech.com
5 Volts Fixed output Voltage
VIN = 3V to 5.5V
Cin
3.3uF
U1
SC1462
1 VIN Vo 5
46
SHDN C+
GND C- 3
Cbucket
3.3uF
Cout
3.3uF
2
U2
SC2982
1 VIN
VOUT 5
2 GND
34
EN BYPASS
EN
VOUT = 5V
C2
10nF
C3
1uF
3.3 Volts Fixed output Voltage
VIN = 2V to 3V
Cin
3.3uF
U1
SC1462
1 VIN Vo 5
4 SHDN C+ 6
GND C- 3
Cbucket
3.3uF
Cout
3.3uF
2
1 IN
U2
SC1453
OUT
5
3 EN GND BYP 4
EN 2
VOUT = 3.3V
C2
10nF
C3
1uF
© 2000 SEMTECH CORP.
5
652 MITCHELL ROAD NEWBURY PARK CA 91320
5 Page | ||
| Páginas | Total 9 Páginas | |
| PDF Descargar | [ Datasheet SC1462.PDF ] | |
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