LED大功率升降压恒流驱动芯片外围超简单可PWM模拟调光高效率驱动方案

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LED大功率升降压恒流驱动芯片外围超简单可PWM模拟调光高效率驱动方案
9 C* j# e/ z3 t1 Q AP5503 宽电压 LED 升降压型恒流芯片

描述
# e7 i, M% F8 y, W) }' VAP5503是电流模式DC / DC转换器，具有
用于驱动LED的外部电源NMOS。的
# }! G6 b3 s. u( }& V. F- Y3 |AP5503在降压，升压和升压模式下用作LED驱动器
降压-升压模式。 LED电流可通过120mV感测电阻器在外部编程。用
! e; e. [5 H3 V8 u# Q' ^/ M8 r500KHz工作频率，外部电感和
: q( j7 }: N! a# |输入/输出电容器都可以很小。调光罐
可以是模拟，PWM或PWM转换为模拟
与外部电容器。
AP5503采用MSOP-10（FD）封装。
" W" [, l( }) D( ?4 J' U7 N% `特征
„高电压：VIN最高60V，VOUT最高60V
5 W1 j+ k2 p8 n: T( ]' }降压，升压或降压-升压操作
' }& J  U' W& `) U1 p8 z' T- j„具有500KHz和200KHz的电流模式PWM
8 m2 T; n1 V3 Q! e5 j, l开关频率
„易于调光：使用一个外部电容器将模拟，PWM或PWM转换为模拟
1 ?, g  Z) i, l软启动以避免涌入电流
5 f3 y: \* t7 ~可编程过压保护至极限
! l- e9 k, W/ ~! g输出电压
% N/ Q. d) a  t. n# L; ^VIN欠压锁定和热关断
4 F9 x) @, M" M+ x. _5 G$ |MSOP-10（FD）封装
应用领域
) t+ O  D. t6 `" M/ OGPS，便携式DVD背光
„台灯和房间照明
, V# x" Q# q' N7 [, q- D+ S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
! X) N; g( i  x4 _& u! ]AP5503 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
  U% |% ?5 K: K! h500KHz operating frequency, the external inductor and
input/output capacitors can all be small. Dimming can
be either analog, PWM, or PWM converting to analog
! K9 e8 \% k9 O& P4 Twith an external capacitor.
The AP5503 is available in MSOP-10 (FD) package.
Features
7 X' s4 h3 ~9 a# [7 Y' [„ High Voltage : VIN up to 60V, VOUT up to 60V
„ Buck, Boost or Buck-Boost Operation
# `0 A4 |' R, P5 h0 T0 K& {„ Current Mode PWM with 500KHz and 200KHz
% |" o  e. j! K9 n4 tSwitching Frequency
4 w& d. _5 y, |' @! @„ Easy dimming : Analog, PWM or PWM Converting to Analog with One External Capacitor
; r/ R  Z% S- {1 O) B„ Soft Start to Avoid Inrush Current
6 N, E3 N6 l" s! s1 Q. L+ ^3 d„ Programmable Over Voltage Protection to Limit
7 r) j* v0 X. y& H+ Y* kOutput Voltage
„ VIN Under Voltage Lockout and Thermal Shutdown
7 X  D0 q9 m+ a5 {„ MSOP-10 (FD) Package
" T5 g' z4 u* g  c) n5 ^1 V) \% e! bApplications
5 K6 `+ _  M( ]% l„ GPS, Portable DVD Backlight
3 N1 }+ P/ E/ M+ d5 x+ [; ~„ Desk Light and Room Lighting
/ m/ ?6 g0 o# p4 D3 {, J„ Industrial Display Backlight
+ z. H6 M. r' Y" }4 D, G8、样板申请联系：
" g  X/ V7 p: T5 k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
; m, Z# F% W( w  v0 B( R# A7 d深圳市宝安西乡街道宝源路名优采购中心B座1区326

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