AP5503 宽电压 LED 升降压型恒流芯片

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+ j# K$ m2 x* ]9 Q/ @ AP5503 宽电压 LED 升降压型恒流芯片

描述
AP5503是电流模式DC / DC转换器，具有
( y# r1 l$ y; ?0 ^用于驱动LED的外部电源NMOS。的
1 v2 I, D4 D6 ^/ aAP5503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
6 A, w8 ?! O+ y0 }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
& W* U% J9 x. H) |可以是模拟，PWM或PWM转换为模拟
与外部电容器。
! X# y; M' u! e/ F9 bAP5503采用MSOP-10（FD）封装。
特征
„高电压：VIN最高60V，VOUT最高60V
  Z! r6 C0 ]* s. f0 U; d降压，升压或降压-升压操作
3 T5 @4 ?# ]! q( ?/ [% i„具有500KHz和200KHz的电流模式PWM
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
0 z- ]) x/ z2 o" v+ L4 D* n7 P" `软启动以避免涌入电流
可编程过压保护至极限
输出电压
VIN欠压锁定和热关断
MSOP-10（FD）封装
$ m2 _+ D0 x' W, N应用领域
GPS，便携式DVD背光
„台灯和房间照明
2 b# O0 _7 O3 x- ^: K$ [+ J工业显示屏背光
& G: ]) l/ ~" k' N# P8 d1 W: i Description
The AP5503 is a current mode DC/DC converter with
; e( F4 h( s  o& Ooutside power NMOS designed to drive LEDs. The
! V& L8 q$ }' i5 XAP5503 operates as a LED driver in buck, boost and
% Z- L; ^7 k) Y2 hbuck-boost mode. The LED current is externally programmable with a 120mV sense resistor. With a
2 ?7 L) r. O# N5 |4 K500KHz operating frequency, the external inductor and
input/output capacitors can all be small. Dimming can
1 B7 r! _; Q) _- O& A' ~/ vbe either analog, PWM, or PWM converting to analog
) {. h6 o3 h: R: m! K  Pwith an external capacitor.
) c/ E* g8 l8 M) X. CThe AP5503 is available in MSOP-10 (FD) package.
' y! k: W1 L* @& r6 ~0 z& h# }0 QFeatures
. X0 Q! @' B; W1 F5 K) J# ]! o„ High Voltage : VIN up to 60V, VOUT up to 60V
+ E/ _+ O$ O  V/ Z1 `„ Buck, Boost or Buck-Boost Operation
„ Current Mode PWM with 500KHz and 200KHz
" f6 W3 ?' U. {: z# x' x7 zSwitching Frequency
$ \4 c5 c* v. h' D% H& g$ Q* n/ a8 d„ Easy dimming : Analog, PWM or PWM Converting to Analog with One External Capacitor
; ?% z5 v/ z- [& [! Y„ Soft Start to Avoid Inrush Current
! p  d/ i3 _7 q, A  i/ B„ Programmable Over Voltage Protection to Limit
. J$ Y) i! J0 }+ YOutput Voltage
# t* n# u" A% y„ VIN Under Voltage Lockout and Thermal Shutdown
/ ]  K# i$ w& K! F8 D& q- K„ MSOP-10 (FD) Package
) G0 T; _" i2 k: BApplications
8 ?3 B8 J! [- N, L' Y# @„ GPS, Portable DVD Backlight
„ Desk Light and Room Lighting
+ d2 h1 y+ C; q„ Industrial Display Backlight
8、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
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