LTC3217 datasheet(12/12 Pages) LINER

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LTC3217

3217f

Linear Technology Corporation

1630 McCarthy Blvd., Milpitas, CA 95035-7417

(408) 432-1900 ● FAX: (408) 434-0507 ● www.linear.com

©LINEAR TECHNOLOGY CORPORATION 2005

LT/TP 0805 500 • PRINTED IN USA

RELATED PARTS

PART NUMBER

DESCRIPTION

COMMENTS

®1618

Constant Current, Constant Voltage, 1.4MHz

Up to 16 White LEDs, VIN: 1.6V to 18V, VOUT(MAX) = 34V, IQ = 1.8mA,

High Efficiency Boost Regulator

ISD ≤ 1µA, 10-Lead MS Package

LTC1911-1.5

250mA (IOUT), 1.5MHz High Efficiency

75% Efficiency, VIN: 2.7V to 5.5V, VOUT(MAX) = 1.5V/1.8V, IQ = 180µA,

Step-Down Charge Pump

ISD ≤ 10µA, MS8 Package

LT1932

Constant Current, 1.2MHz High Efficiency

Up to 8 White LEDs, VIN: 1V to 10V, VOUT(MAX) = 34V, IQ = 1.2mA,

White LED Boost Regulator

ISD ≤ 1µA, ThinSOT

TM Package

LT1937

Constant Current, 1.2MHz High Efficiency

Up to 4 White LEDs, VIN: 2.5V to 10V, VOUT(MAX) = 34V, IQ = 1.9mA,

White LED Boost Regulator

ISD ≤ 1µA, ThinSOT, SC70 Packages

LTC3200-5

Low Noise, 2MHz Regulated Charge Pump

Up to 6 White LEDs, VIN: 2.7V to 4.5V, VOUT(MAX) = 5V, IQ = 8mA,

White LED Driver

ISD ≤ 1µA, ThinSOT Package

LTC3201

Low Noise, 1.7MHz Regulated Charge Pump

Up to 6 White LEDs, VIN: 2.7V to 4.5V, VOUT(MAX) = 5V, IQ = 6.5mA,

White LED Driver

ISD ≤ 1µA, 10-Lead MS Package

LTC3202

Low Noise, 1.5MHz Regulated Charge Pump

Up to 8 White LEDs, VIN: 2.7V to 4.5V, VOUT(MAX) = 5V, IQ = 5mA,

White LED Driver

ISD ≤ 1µA, 10-Lead MS Package

LTC3205

Multidisplay LED Controller

92% Efficiency, VIN: 2.8V to 4.5V, IQ = 50µA, ISD ≤ 1µA,

(4mm

× 4mm) QFN Package

LTC3206

I2C Multidisplay LED Controller

92% Efficiency, 400mA Continuous Output Current. Up to 11 White LEDs

in (4mm

× 4mm) QFN Package

LTC3208

High Current Software Configurable Multidisplay LED

95% Efficiency, VIN: 2.9V to 4.5V, 1A Output Current, Up to 17 LEDs for

Controller

5 Displays, (5mm

× 5mm) QFN Package

LTC3214

500mA Camera LED Charge Pump

93% Efficiency, VIN: 2.9V to 4.4V, 1x/1.5x/2x Boost Modes,

3mm

× 3mm DFN Package

LTC3215

700mA High Current, Low Noise, White LED Driver

93% Efficiency, VIN: 2.9V to 4.4V, 1x/1.5x/2x Boost Modes,

3mm

× 3mm DFN Package

LTC3216

1A High Current, Low Noise, White LED Driver

93% Efficiency, VIN: 2.9V to 4.4V, 1x/1.5x/2x Boost Modes, Independent

Low/High Current Programming, 3mm

× 4mm DFN Package

LTC3251

500mA (IOUT), 1MHz to 1.6MHz Spread Spectrum

85% Efficiency, VIN: 3.1V to 5.5V, VOUT: 0.9V to 1.6V, IQ = 9µA,

Step-Down Charge Pump

ISD ≤ 1µA, 10-Lead MS Package

LTC3405/LTC3405A

300mA (IOUT), 1.5MHz Synchronous

95% Efficiency, VIN: 2.7V to 6V, VOUT(MIN) = 0.8V, IQ = 20µA,

Step-Down DC/DC Converter

ISD ≤ 1µA, ThinSOT Package

LTC3406/LTC3406A

600mA (IOUT), 1.5MHz Synchronous

95% Efficiency, VIN: 2.7V to 5.5V, VOUT(MIN) = 0.6V, IQ = 20µA,

Step-Down DC/DC Converter

ISD ≤ 1µA, ThinSOT Package

ThinSOT is a trademark of Linear Technology Corporation.

TYPICAL APPLICATIO

500mA Camera Flash with PWM Brightness Control

2.2

µF

2.2

µF

1kHz

PWM

(5% TO 100% DC)

2.2

µF

2.2

µF

VBAT

3.92k

ILED

500mA (MAX)

3217 TA02

LED1

LED2

LED3

LED4

GND

VBAT

EN1

EN2

LTC3217

C1P

C1M C2P

C2M

ISET1

ISET2

CPO

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