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参数资料
| 型号： | MAX4893BETB+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 10/13页 |
| 文件大小： | 0K |
| 描述： | IC CTLR OVP CURR LIMIT 10-TDFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 类型： | 过压保护控制器 |
| 应用： | 手机，数码相机，媒体播放器 |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 10-WFDFN 裸露焊盘 |
| 供应商设备封装： | 10-TDFN-EP（3x3） |
| 包装： | 带卷 (TR) |
MAX4881–MAX4884/MAX4893B
Overvoltage Protection Controllers with
Current Limit in TDFN
6
_______________________________________________________________________________________
Pin Description
PIN
NAME
FUNCTION
1IN
Input. IN is the power input for the OVP charge pump. Bypass IN to GND with a 1F or larger
capacitor.
2
EN
Active-Low Enable Input. Drive
EN high to turn off the external MOSFET. Driving EN low activates
the OVP circuitry and turns on the external MOSFET.
3
GATE
Gate Drive Output. GATE is the output of an on-chip OVP charge pump. When VUVLO < VIN <
VOVLO, GATE is driven high to turn on the external n-channel MOSFET.
4
BTA
Internal Current-Limited Switch Terminal. Connect BTA to the source of the external n-channel
MOSFET. BTA is the power input for the entire device (except the OVP charge pump). Bypass BTA
to GND with a 0.1F capacitor as close to the device as possible for proper operation.
5CB
Active-Low Internal Current-Limited-Switch Control Input. Drive CB high to turn on the internal
switch, pull CB low to turn off the internal switch.
6
GND
Ground
7
BTB
Internal Current-Limited-Switch Output. Bypass BTB to GND with 0.1F capacitor as close to the
device as possible.
8
FLAGI
Active-Low Open-Drain Internal Current-Limited Flag Output.
FLAGI asserts low when the current
is at the limit for longer than the blanking time.
FLAGI is disabled when EN goes high.
9
N.C.
No Connection. Not internally connected.
10
OV
Active-Low Open-Drain IN-Overvoltage Flag Output.
OV goes low when an
undervoltage/overvoltage fault occurs at IN.
OV is disabled when EN goes high.
—
EP
Exposed Pad. EP is internally connected to GND. Correct EP to a large ground plane to act as a
heat sink, but do not use EP as the only electrical ground connection.
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