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参数资料
| 型号： | MAX4893BETB+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 1/13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) |
General Description
The MAX4881–MAX4884/MAX4893B overvoltage pro-
tection (OVP) controllers with built-in current-limited
switch, protect low-voltage systems against voltages of
up to 28V. When the input voltage exceeds the overvolt-
age trip level of 5.6V (MAX4881/MAX4883/MAX4893B) or
4.5V (MAX4882/MAX4884), the external n-channel MOS-
FET is turned off to prevent damage to the protected
components. An undervoltage/overvoltage flag indicator
(OV) notifies the processor that an undervoltage/overvolt-
age fault condition is present.
The MAX4881/MAX4882 feature an internal 1.1A
current-limited switch, while the MAX4883B/MAX4883C/
MAX4884B/MAX4884C include an internal 0.7A current-
limited switch. The MAX4893B includes a 0.9A current-
limited switch. When the load current is at the current
limit for longer than the blanking time, the switch of the
MAX4881/MAX4882/MAX4883B/MAX4884B/
MAX4893B latches off and does not turn back on until
EN, CB, or IN is cycled. A current-limit flag (FLAGI)
asserts to indicate a current fault condition.
The MAX4883C/MAX4884C limit the current to 0.7A
indefinitely until the thermal protection trips. An overcur-
rent flag output asserts to indicate a current fault condi-
tion after the blanking time has elapsed.
The MAX4881–MAX4884/MAX4893B have a control
input (CB) that is used to turn on and off the internal cur-
rent-limited switch. Other features include a shutdown
function (EN) to disable the external n-channel MOSFET,
and a built-in startup delay to allow the adapter voltage
to settle down before turning on the MOSFET.
The MAX4881–MAX4884/MAX4893B are offered in a
space-saving 10-pin TDFN package and operate over
the extended -40°C to +85°C temperature range.
Applications
Features
o Overvoltage Protection Up to 28V
o Preset Overvoltage Trip Level
5.6V (MAX4881/MAX4883/MAX4893B)
4.5V (MAX4882/MAX4884)
o Internal Current-Limited Switch
1.1A (MAX4881/MAX4882)
0.7A (MAX4883/MAX4884)
0.9A (MAX4893B)
o Drives Low-Cost n-Channel MOSFET
o Internal 50ms Startup Delay
o Overvoltage Fault OV Indicator
o Current-Limit Fault FLAGI Indicator
o Undervoltage Lockout
o Thermal Shutdown Protection
o Tiny 10-Pin TDFN Package
MAX4881–MAX4884/MAX4893B
Overvoltage Protection Controllers with
Current Limit in TDFN
________________________________________________________________ Maxim Integrated Products
1
OV
FLAGI
GND
BTB
MAX4881
MAX4882
MAX4883
MAX4884
MAX4893B
N.C.
IN
GATE
BTA
EN
3mm x 3mm TDFN
TOP VIEW
CB
13
4
10
*EP
*CONNECT EXPOSED PAD TO GND.
87
2
9
5
6
+
Pin Configuration
Ordering Information
19-3777; Rev 2; 10/06
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
PART
TEMP RANGE
PIN-PACKAGE
OV TRIP
LEVEL (V)
CURRENT
LIMIT (A)
CURRENT-LIMIT
MODE
TOP
MARK
PKG
CODE
MAX4881ETB
-40°C to +85°C
10 TDFN-EP*
5.6
1.1
LATCHOFF
APK
T1033-1
MAX4882ETB
-40°C to +85°C
10 TDFN-EP*
4.5
1.1
LATCHOFF
APL
T1033-1
MAX4883BETB
-40°C to +85°C
10 TDFN-EP*
5.6
0.7
LATCHOFF
APM
T1033-1
MAX4883CETB
-40°C to +85°C
10 TDFN-EP*
5.6
0.7
CONTINUOUS
APN
T1033-1
MAX4884BETB**
-40°C to +85°C
10 TDFN-EP*
4.5
0.7
LATCHOFF
APO
T1033-1
MAX4884CETB**
-40°C to +85°C
10 TDFN-EP*
4.5
0.7
CONTINUOUS
APP
T1033-1
MAX4893BETB
-40°C to +85°C
10 TDFN-EP*
5.6
0.9
LATCHOFF
ATF
T1033-1
Cell Phones
Digital Still Cameras
PDAs and Palmtop Devices
MP3 Players
* EP = Exposed pad.
**Future product—contact factory for availability.
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