Datasheet > BD60AX0NUX-TR

BD60AX0NUX-TR

更新时间： 2022-02-26 13:43:09

品牌	Logo	应用领域
罗姆 - ROHM		/
页数	文件大小	规格书
26页	956K
描述
White LED Driver With PWM Brightness Control

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

BD60AX0NUX-TR 数据手册

Daattaasshheeeett

BD60A00NUX

BD60A60NUX

●Main characteristics examples - continued

・BD60A00NUX PWM duty – LED current

IC Power=5.0V, LED 8serial, LED current =25mA, PWM frequency = 20 kHz, Ta=25deg

coil 1094AS-10M (TOKO), SBD RB060M-60TR (ROHM)

100.00

10.00

1.00

BD60A00NUX Vcoil vs efficiency

VIN=5VꢀTa=25℃

LED 8 灯(26V)

coil 1094AS-10M(TOKO)

SBD RB060M-60TR(ROHM)

LED current 25mA

PWM frequency 20kHz

0.10

0.01

0.1

1.0

10.0

100.0

PWM duty (%)

0.4%

Possible to Duty 0.4% at PWM=20 kHz

●Functional Descriptions

1) PWM current mode DC/DC converter

This IC keeps output voltage invariably by setting PWM duty to make FB terminal 0.7V when the power is on. As for the

inputs of the PWM comparator as the feature of the PWM current mode, one is overlapped with error components from

the error amplifier, and the other is overlapped with a current sense signal that controls the inductor current into Slope

waveform to prevent sub harmonic oscillation. This output controls internal Nch Tr via the RS latch. In the period where

internal Nch Tr gate is ON, energy is accumulated in the external inductor, and in the period where internal Nch Tr gate

is OFF, energy is transferred to the output capacitor via external SBD.

This IC has many safety functions, and their detection signals stop switching operation at once.

2) Soft Start

This IC has soft start function, which prevents rush current at turning on.

After EN and PWM are changed L H, soft start becomes effective within 1ms. Soft start doesn't become effective

even if Enable is changed L H, after that. By changing EN and PWM L H, soft start can become effective.

Since a soft start function stops working at the time of following PWM=H when EN=H is held with PWM=L

After EN=H should input a PWM signal within 10ms.

Soft start time Finish

Within 10ms

PWM

Soft Start OFF

OFF

Soft Start

Reset

OFF

Reset

Figure 2. Soft start

www.rohm.com

TSZ22111・15・001

TSZ02201-0G3G0C200320-1-2

7.FEB.2013 Rev.002

7/22

1...4 5 678 9 10...26

下载PDF

与BD60AX0NUX-TR相关器件

型号	品牌	描述	获取价格	数据表
BD60BC0FP	ROHM	Fixed Positive LDO Regulator, 6V, PSSO3, ROHS COMPLIANT, TO-252, 3 PIN	获取价格
BD60BC0FPE2	ROHM	Fixed Positive LDO Regulator, 6V, PSSO3, ROHS COMPLIANT, TO-252, 3 PIN	获取价格
BD60BC0T	ROHM	Fixed Positive LDO Regulator, 6V, PSFM3, ROHS COMPLIANT, TO-220FP, 3 PIN	获取价格
BD60BC0WFP	ROHM	Fixed Positive LDO Regulator, 6V, PSSO5, ROHS COMPLIANT, TO-252, 5 PIN	获取价格
BD60BC0WFPE2	ROHM	Fixed Positive LDO Regulator, 6V, PSSO5, ROHS COMPLIANT, TO-252, 5 PIN	获取价格
BD60BC0WT	ROHM	Fixed Positive LDO Regulator, 6V, PSFM5, ROHS COMPLIANT, TO-220FP, 5 PIN	获取价格