参数资料
型号: TPS62232DRYT
厂商: Texas Instruments
文件页数: 22/35页
文件大小: 0K
描述: IC REG BUCK SYNC 1.2V 0.5A 6SON
标准包装: 1
类型: 降压(降压)
输出类型: 固定
输出数: 1
输出电压: 1.2V
输入电压: 2.05 V ~ 6 V
PWM 型: 电压模式
频率 - 开关: 3MHz
电流 - 输出: 500mA
同步整流器:
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 6-UFDFN
包装: 标准包装
供应商设备封装: 6-SON(1.45x1)
产品目录页面: 1026 (CN2011-ZH PDF)
其它名称: 296-24486-6
TPS62230, TPS62231, TPS62232, TPS62233, TPS62234, TPS62235, TPS62236
TPS62237, TPS62238, TPS62239, TPS622310, TPS622311, TPS622312
TPS622313, TPS622314, TPS622315, TPS622316, TPS622317, TPS622318
SLVS941E – APRIL 2009 – REVISED DECEMBER 2010
The EN input can be used to control power sequencing in a system with various DC/DC converters. The EN pin
can be connected to the output of another converter, to drive the EN pin high and getting a sequencing of supply
rails.
SHORT-CIRCUIT PROTECTION
The TPS6223X integrates a High Side and Low Side MOSFET current limit to protect the device against heavy
load or short circuit. The current in the switches is monitored by current limit comparators. When the current in
the P-channel MOSFET reaches its current limit, the P-channel MOSFET is turned off and the N-channel
MOSFET is turned on to ramp down the current in the inductor. The High Side MOSFET switch can only turn on
again, once the current in the Low Side MOSFET switch has decreased below the threshold of its current limit
comparator.
THERMAL SHUTDOWN
As soon as the junction temperature, T J , exceeds 150°C (typical) the device goes into thermal shutdown. In this
mode, the High Side and Low Side MOSFETs are turned-off. The device continues its operation when the
junction temperature falls below the thermal shutdown hysteresis.
22
Copyright ? 2009–2010, Texas Instruments Incorporated
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