AP5503 宽电压 LED 升降压型恒流芯片

aqbjxk

AP5503 宽电压 LED 升降压型恒流芯片
& t7 v' f5 \: W
- M% |9 L: \* P* ?$ w# |描述
AP5503是电流模式DC / DC转换器，具有
用于驱动LED的外部电源NMOS。的
3 K0 w4 G# K7 j3 C+ E! T- Y7 bAP5503在降压，升压和升压模式下用作LED驱动器
! M+ Z  m- R8 s& }; X' Z( l降压-升压模式。 LED电流可通过120mV感测电阻器在外部编程。用
500KHz工作频率，外部电感和
输入/输出电容器都可以很小。调光罐
* k( k0 j! E/ d% E) r1 ^% r0 \可以是模拟，PWM或PWM转换为模拟
与外部电容器。
) v/ e8 q- X# v( F0 k3 ~# K. N+ LAP5503采用MSOP-10（FD）封装。
特征
; A* _" r1 S1 M. f- u9 O3 b„高电压：VIN最高60V，VOUT最高60V
降压，升压或降压-升压操作
„具有500KHz和200KHz的电流模式PWM
% k0 X; k4 x% _) O" d% B, ~开关频率
; U: e. L$ y. P3 N5 I. y„易于调光：使用一个外部电容器将模拟，PWM或PWM转换为模拟
$ D7 o2 p6 {% P2 M/ x软启动以避免涌入电流
可编程过压保护至极限
输出电压
: [$ ^& Z, P6 L# XVIN欠压锁定和热关断
( j& s! H% z2 d7 Y6 F- X! s% U0 VMSOP-10（FD）封装
# S/ e* f$ g# s% f5 E应用领域
! o4 O1 }/ V) J+ g# ?: QGPS，便携式DVD背光
' `/ F( ?8 Q3 c# a„台灯和房间照明
( ~* L( @4 g0 A, O6 w6 K# n" ?工业显示屏背光
Description
The AP5503 is a current mode DC/DC converter with
outside power NMOS designed to drive LEDs. The
2 j# b; B$ O+ {" b% EAP5503 operates as a LED driver in buck, boost and
buck-boost mode. The LED current is externally programmable with a 120mV sense resistor. With a
500KHz operating frequency, the external inductor and
input/output capacitors can all be small. Dimming can
be either analog, PWM, or PWM converting to analog
with an external capacitor.
" N+ S5 l/ D5 w# X. HThe AP5503 is available in MSOP-10 (FD) package.
- e0 d) \" [: W0 j+ IFeatures
9 B% L' L* Z7 {3 u. h* `& Y  w$ V„ High Voltage : VIN up to 60V, VOUT up to 60V
% N0 W% `+ C5 w6 {4 B4 _. B„ Buck, Boost or Buck-Boost Operation
„ Current Mode PWM with 500KHz and 200KHz
Switching Frequency
„ Easy dimming : Analog, PWM or PWM Converting to Analog with One External Capacitor
„ Soft Start to Avoid Inrush Current
„ Programmable Over Voltage Protection to Limit
Output Voltage
„ VIN Under Voltage Lockout and Thermal Shutdown
„ MSOP-10 (FD) Package
) {4 I' K" R' `& jApplications
„ GPS, Portable DVD Backlight
; l" M, z( j6 n/ U6 _# Z$ k„ Desk Light and Room Lighting
2 z+ ^2 a8 f- w5 M7 a„ Industrial Display Backlight
3 s+ G$ v8 a& Y1 I. f8、样板申请联系：
深圳市世微半导体有限公司
如需要了解可以联系欧阳： 18811874036 13714437124（微信）QQ:2355558464
' o) j! v0 q6 s8 z! q& W深圳市宝安西乡街道宝源路名优采购中心B座1区326
' N* X7 a9 r% }& z' B8 I