SC1462ISKTRT Semtech, SC1462ISKTRT Datasheet

IC CHARGE PUMP DOUBLER SOT-23-6

SC1462ISKTRT

Manufacturer Part Number
SC1462ISKTRT
Description
IC CHARGE PUMP DOUBLER SOT-23-6
Manufacturer
Semtech
Type
Switched Capacitor (Charge Pump), Doublerr
Datasheet

Specifications of SC1462ISKTRT

Internal Switch(s)
Yes
Synchronous Rectifier
No
Number Of Outputs
1
Voltage - Output
Adj to 12V
Current - Output
80mA
Frequency - Switching
160kHz
Voltage - Input
1.65 ~ 5.5 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
SOT-23-6
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Power - Output
-
Other names
SC1462ISKTR

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
SC1462ISKTRT
Manufacturer:
SEMTECH/美国升特
Quantity:
20 000
December 12, 2005
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 qui-
escent current charge pump doubler can be implemented
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 applications
that require up to 80mA of output current with V
to 5.5V. Typical dropout voltage (2×V
low for several values of V
Typical Application Circuit
POWER MANAGEMENT
Description
Typical Application Circuit
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.0
000E+0
Logic Control or GND
V
V
V
V
V
IN
IN
IN
IN
IN
20E-3
= 1.5V
= 2.5V
= 3.6V
= 4.5V
= 5.5V
Typical Dropout Voltage vs. I
V
IN
@T
40E-3
A
IN
= 25 Deg. C.
.
I
OUT
(A)
60E-3
NOT RECOMMENDED FOR NEW DESIGN
3.3μF
C
IN
IN
OUT
)-V
OUT
4
1
80E-3
SHDN
VIN
is shown be-
IN
= 2.5V
100E-3
SC1462
2
GND
1
Features
Features
Applications
VOUT
Input supply voltage range of 1.65V to 5.5V
Small size - 6 pin SOT-23 package
Typical effi ciency of :
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 specifi cations rated over full temperature range
(-40°C to 85°C)
Cellular phones
Handheld devices
LCD Display
C+
C-
91% @ V
94% @ V
5
6
3
IN
IN
= 2.5V, I
= 3.6V, I
C
3.3μF
Charge Pump Doubler
BUCKET
High Output Current
OUT
OUT
= 45mA
= 55mA
C
3.3μF
OUT
www.semtech.com
V
OUT

Related parts for SC1462ISKTRT

SC1462ISKTRT Summary of contents

Page 1

... OUT Applications Cellular phones Handheld devices LCD Display 80E-3 100E-3 SC1462 4 SHDN VOUT 1 VIN 3.3μF C- GND 2 1 High Output Current Charge Pump Doubler = 2.5V 45mA IN OUT = 3.6V 55mA IN OUT OUT 3.3μ BUCKET 3.3μF 3 www.semtech.com OUT ...

Page 2

... Junction Temperature Range Storage Temperature Range Peak IR Flow Temperature, SC1462ISKTR Peak IR Flow Temperature, SC1462ISKTRT Notes: 1) This device is ESD sensitive. Use of standard ESD handlng precautions is required. 2) Calculated from package in still air, mounted to 3” x 4.5”, 4 layer FR4 PCB with thermal vias under the exposed pad as per JESD51 standards. ...

Page 3

... The parameter was calculated from actual output resistance and the equation on Page 6 for All electrical characteristics are for the Typical Application Circuit on Page 1. 4) Guaranteed by design. 5) Soft start functionality is performed along with short circuit protection and V is charged with a 200mA current source from V OUT © 2005 Semtech Corp. Conditions OUT V ...

Page 4

... This pin should be connected to the positive terminal of the external charging capacitor. Block Diagram © 2005 Semtech Corp. Ordering Information DEVICE (1) SC1462ISKTR SC1462ISKTRT (2) Notes: 1) Available in tape and reel only. A reel contains 3,000 devices. 2) This Pb free device is WEEE and RoHS compliant. , the device enters sleep mode. IN ...

Page 5

... Cin Doubler Short Circuit/Soft-Start An internal current limit and soft-start circuit provides pro- tection against output short circuit and limits large cur- rent spikes generated during the initial start-up to charge output capacitor. © 2005 Semtech Corp less than V OUT off and When V ...

Page 6

... × ESR_ C OUT SW f × C OSC BUCKET © 2005 Semtech Corp. This equation can be used to calculate C cifi OUT for the R Page 2 should be used in order to fi worst-case num- ber. Layout Consideration Standard power board layout should be followed to ensure proper operation. Any stray inductance should be mini- ...

Page 7

... GND 2 U1 SC1462 VIN Vo 4 SHDN 3.3μF C- GND 2 SC1462 1 VIN 4 SHDN C+ GND 2 (3.3V Input Supply) Battery Operated Synchronous Buck Converter © 2005 Semtech Corp. SC2982 5 1 VIN 2 GND BUCKET OUT EN 3 3.3μF 3.3μ Volts Fixed Ouput Voltage SC1453 ...

Page 8

... 4. 1.5V IN 80% 000E+0 20E-3 40E-3 60E-3 I (A) OUT © 2005 Semtech Corp. = 0mA 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0 0mA OUT 0.0 4.0 5.0 6.0 000E+0 = 0mA 550E-3 500E-3 450E-3 400E-3 350E-3 300E ...

Page 9

... E/2 ccc C 2X N/2 TIPS aaa C SEATING PLANE NOTES: 1. CONTROLLING DIMENSIONS ARE IN MILLIMETERS (ANGLES IN DEGREES). 2. DATUMS -A- 3. DIMENSIONS "E1" AND "D" DO NOT INCLUDE MOLD FLASH, PROTRUSIONS OR GATE BURRS. © 2005 Semtech Corp. DIM A MIN A e1 .035 D A1 .000 A2 .035 N b .010 c ...

Page 10

... Land Pattern - SOT-23-6L X (C) P NOTES: 1. THIS LAND PATTERN IS FOR REFERENCE PURPOSES ONLY. CONSULT YOUR MANUFACTURING GROUP TO ENSURE YOUR COMPANY'S MANUFACTURING GUIDELINES ARE MET. Contact Information Phone: (805) 498-2111 FAX (805) 498-3804 © 2005 Semtech Corp. DIMENSIONS DIMENSIONS DIM DIM INCHES INCHES (.098 ...

Related keywords