LTC1751 Datasheet, PDF (12/12 Pages) Linear Technology – Micropower, Regulated Charge Pump DC/DC Converters"

LTC1751/LTC1751-3.3/LTC1751-5
TYPICAL APPLICATIO
Current Mode White or Blue LED Driver with PWM Brightness Control
C4
1µF
3V TO 4.5V
Li-Ion
BATTERY
C1
10µF
V_SHDN
17ms
t
6
C⁺
3
V_IN
5
C^–
2
V_OUT
LTC1751
7
1
SHDN
FB
8
SS
C3
680pF
4
GND
C2
10µF
82Ω
UP TO 6 LEDS
82Ω
82Ω
82Ω
82Ω
82Ω
1751 TA03
PACKAGE DESCRIPTIO Dimensions in inches (millimeters) unless otherwise noted.
MS8 Package
8-Lead Plastic MSOP
(LTC DWG # 05-08-1660)
0.007
(0.18)
0.043
(1.10)
MAX
0° – 6° TYP
0.021 ± 0.006
(0.53 ± 0.015)
SEATING
PLANE
0.009 – 0.015
(0.22 – 0.38)
0.0256
(0.65)
BSC
0.034
(0.86)
REF
0.118 ± 0.004*
(3.00 ± 0.102)
0.005 ± 0.002
(0.13 ± 0.05)
MSOP (MS8) 1100
0.193 ± 0.006
(4.90 ± 0.15)
* DIMENSION DOES NOT INCLUDE MOLD FLASH, PROTRUSIONS OR GATE BURRS. MOLD FLASH,
PROTRUSIONS OR GATE BURRS SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE
** DIMENSION DOES NOT INCLUDE INTERLEAD FLASH OR PROTRUSIONS.
INTERLEAD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE
8 76 5
1 234
0.118 ± 0.004**
(3.00 ± 0.102)
RELATED PARTS
PART NUMBER
LTC1144
LTC1262
LTC1514/LTC1515
LTC1516
LTC1517-5/LTC1517-3.3
LTC1522
LTC1555/LTC1556
LTC1682
LTC1754-5
LTC1755
LTC3200
DESCRIPTION
Charge Pump Inverter with Shutdown
12V, 30mA Flash Memory Prog. Supply
Buck/Boost Charge Pumps with I_Q = 60µA
Micropower 5V Charge Pump
Micropower 5V/3.3V Doubler Charge Pumps
Micropower 5V Doubler Charge Pump
SIM Card Interface
Low Noise Doubler Charge Pump
Micropower 5V Doubler Charge Pump
Smart Card Interface
Constant Frequency Doubler Charge Pump
12 Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone]^q FAX:[phone] ^q www.linear-tech.com
COMMENTS
V_IN = 2V to 18V, 15V to –15V Supply
Regulated 12V ±5% Output, I_Q = 500µA
50mA Output at 3V, 3.3V or 5V; 2V to 10V Input
I_Q = 12µA, Up to 50mA Output, V_IN = 2V to 5V
I_Q = 6µA, Up to 20mA Output
I_Q = 6µA, Up to 20mA Output
Step-Up/Step-Down Charge Pump, V_IN = 2.7V to 10V
Output Noise = 60µV_RMS, 2.5V to 5.5V Output
I_Q = 13µA, Up to 50mA Output, SOT-23 Package
Buck/Boost Charge Pump, I_Q = 60µA, V_IN = 2.7V to 6V
Low Noise, 5V Output or Adjustable
1751f LT/TP 0401 4K • PRINTED IN USA
© LINEAR TECHNOLOGY CORPORATION 2000