TPS61050YZGRT

更新时间： 2024-09-25 13:14:51

品牌	Logo	应用领域
德州仪器 - TI		驱动器转换器升压转换器高功率电源
页数	文件大小	规格书
45页	1390K
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TPS61050YZGRT 数据手册

TPS61050

CSP-12

QFN-10

TPS61052

www.ti.com

SLUS525–MARCH 2007

1.2-A HIGH POWER WHITE LED DRIVER

2-MHz SYNCHRONOUS BOOST CONVERTER WITH I²C COMPATIBLE INTERFACE

FEATURES

DESCRIPTION

•

Four Operational Modes

The TPS6105x device is based on a high-frequency

synchronous-boost topology with constant current

sink to drive single white LEDs. The device uses an

inductive fixed-frequency PWM control scheme using

small external components, minimizing input ripple

current.

–

Torch and Flash up to I_LED= 1200 mA

Voltage-Regulated Boost Converter:

4.5/5.0/5.25 V

–

Shutdown: 0.3 µA (typ)

•

Total Solution Circuit Area < 25 mm²

The 2-MHz switching frequency allows the use of

small and low profile 2.2-µH inductors. To optimize

overall efficiency, the device operates with only a

250 mV LED feedback voltage.

Up to 96% Efficiency

I²C-Compatible Interface up to 400 kbps

Integrated LED Turn-On Safety Timer

Zero Latency TX-Masking Input (TPS61050)

The TPS6105x device not only operates as a

regulated current source, but also as a standard

voltage-boost regulator. This additional operating

mode can be useful to supply other high-power

devices in the system, such as a hands-free audio

power amplifier, or any other component requiring a

supply voltage higher than the battery voltage (refer

to TPS61052).

Hardware Voltage Mode Selection Input

(TPS61052)

•

Integrated ADC for LED V_FMonitoring

Integrated Low Light Dimming Mode

LED Disconnect During Shutdown

Open/Shorted LED Protection

For highest flexibility, the LED current or the desired

output voltage can be programmed via an I²C

Over-Temperature Protection

Available in a 12-Pin NanoFree™ (CSP) and

10-Pin QFN Packaging

compatible

interface.

simplify

flash

synchronization with the camera module, the device

offers a trigger pin (FLASH_SYNC) for fast LED

turn-on time.

APPLICATIONS

•

Camera White LED Torch/Flash for Cell

Phones, Smart-Phones and PDAs

Audio Amplifier Power Supply

When the TPS6105x is not in use, it can be put into

shutdown mode via the I²C-compatible interface,

reducing the input current to 0.3 µA (typ). During

shutdown, the LED pin is high impedance to avoid

leakage current through the LED.

•

4.7 mm

TPS61050

+ BATTERY

VOUT

INDUCTOR

2.2 mH

C_OUT

AVIN

10 mF

C_IN

LED

SENSE

PGND

LED

SCL

SDA

I C I/F

GPIO

PGND

FLASH_SYNC

PGND

AGND

LED ANODE

Figure 1. Typical Application

Figure 2. Typical PC-Board Layout

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas

Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

NanoFree, PowerPAD are trademarks of Texas Instruments.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

12 3 4 5 6 7...45

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与TPS61050YZGRT相关器件

型号	品牌	获取价格	描述	数据表
TPS61050YZGT	TI	获取价格	1.2-A HIGH POWER WHITE LED DRIVER 2-MHz SYNCHRONOUS BOOST CONVERTER WITH I2C COMPATIBLE IN
TPS61052	TI	获取价格	1.2-A HIGH POWER WHITE LED DRIVER 2-MHz SYNCHRONOUS BOOST CONVERTER WITH I2C COMPATIBLE IN
TPS61052DRC	TI	获取价格	1.2-A HIGH POWER WHITE LED DRIVER 2-MHz SYNCHRONOUS BOOST CONVERTER WITH I2C COMPATIBLE IN
TPS61052DRCR	TI	获取价格	采用 DSBGA 封装、具有 I2C 兼容接口的 1.2A 高功率白光 LED 驱动器 \|
TPS61052DRCRG4	TI	获取价格	LED DISPLAY DRIVER, PDSO10, GREEN, PLASTIC, SON-10
TPS61052DRCRT	TI	获取价格	LED DISPLAY DRIVER, PDSO10, PLASTIC, SON-10
TPS61052DRCT	TI	获取价格	采用 DSBGA 封装、具有 I2C 兼容接口的 1.2A 高功率白光 LED 驱动器 \|
TPS61052DRCTG4	TI	获取价格	LED DISPLAY DRIVER, PDSO10, GREEN, PLASTIC, SON-10
TPS61052YZG	TI	获取价格	1.2-A HIGH POWER WHITE LED DRIVER 2-MHz SYNCHRONOUS BOOST CONVERTER WITH I2C COMPATIBLE IN
TPS61052YZGR	TI	获取价格	1.2-A HIGH POWER WHITE LED DRIVER 2-MHz SYNCHRONOUS BOOST CONVERTER WITH I2C COMPATIBLE IN

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