Datasheet > BD65B60GWL

BD65B60GWL

更新时间： 2022-02-26 12:59:53

品牌	Logo	应用领域
罗姆 - ROHM		/
页数	文件大小	规格书
51页	795K
描述
White LED Driver

阅读下载

获取价格

数据手册

如果您发现信息不准确，欢迎纠错

BD65B60GWL 数据手册

Daattaasshheeeett

BD65B60GWL

●Block Diagram

2.7V to 5.5V

1μF

10μH

2.2μF

VBAT

VOUT

TSD

REF

RESET

UVLO

x1, x0.8, x0.6, x0.4

Output short PROTECT

FAULT

DETECTOR

Output Over Voltage PROTECT

Pre-driver

I2C

31V/28V

23.5V

LED TERMINAL

SHORT DETECTOR

ERRAMP

Vshort=no, 5.4V

LED1

PWM COMP

LED

Control

SENSE

Current SENSE

Over Current

Protect

RETURN

SELECT

LED2

GND

Soft start

FB Voltage setting

OSC

VIO

(0.1μF)

1.1 or 0.6MHz

2ch

SCL

SDA

8bit

DAC

LOGIC

ISET Driver

Controller

Current ratio setting

RESET

Current Driver

ISET

PWM

PWMIN

RSET

●Description of Block

The lowest voltage between LED1 and LED2 pins is detected when IC is powered on. Output voltage is kept constant by

controlling the switching duty through the feedback voltage which is set at 0.3V(Typ.). The PWM Current Mode DC/DC

Converter is controlled by the two inputs of the comparator: one is the differential output from the error amplifier and the

other is the sum of current sensing and the ramp signal generated by the oscillator. These combined signals prevent the

sub-harmonic oscillation in PWM Current Mode. The PWM output controls internal switch N-channel Transistor via the RS

latch. Energy is accumulated in the external inductor when the gate of the N-channel transistor is “ON”, while energy is

transferred to the output capacitor via external SBD when the N-channel transistor is “OFF”.

LED brightness is controlled by the current driver which can be set by: external resistor RSET, 8-bit DAC current ratio and

PWM control that is selectable as DC or pulse input.

Furthermore, this IC has several protection functions such as thermal shutdown, over-current protection, under-voltage

lockout, over-voltage protection, external SBD open detection, LED open and short detection. Their respective detection

signals stop the switching operation instantly.

www.rohm.com

TSZ02201-0G3G0C210420-1-2

3.JUN.2013 Rev.001

3/47

TSZ22111・15・001

1 234 5 6 7...51

下载PDF

与BD65B60GWL相关器件

型号	品牌	描述	获取价格	数据表
BD65B60GWL-E2	ROHM	White LED Driver	获取价格
BD65D00MUV	ROHM	4-Channel White LED Driver	获取价格
BD65D00MUV-E2	ROHM	4-Channel White LED Driver	获取价格
BD6603KVT	ROHM	5ch Sensorless System Motor Driver for MD	获取价格
BD6603KVT_11	ROHM	Silicon Monolithic Integrated Circuit	获取价格
BD6603KVT-E1	ROHM	Disk Drive Motor Controller, 0.5A, PQFP64, ROHS COMPLIANT, TQFP-64	获取价格