参数资料
型号: IR3832WMTR1PBF
厂商: International Rectifier
文件页数: 15/32页
文件大小: 0K
描述: IC REG SYNC BUCK 4A DDR 15-QFN
特色产品: Gen2.1 SupIRBuck? Integrated Voltage Regulators
标准包装: 1
系列: SupIRBuck™
应用: 转换器,DDR
输入电压: 1.5 V ~ 16 V
输出数: 1
输出电压: 0.6 V ~ 14.4 V
工作温度: -40°C ~ 125°C
安装类型: 表面贴装
封装/外壳: 15-PowerVQFN
供应商设备封装: PQFN(5x6)
包装: 标准包装
其它名称: IR3832WMTR1PBFDKR
PD-97508
IR3832WMPbF
Thermal Shutdown
Temperature sensing is provided inside
IR3832W. The trip threshold is typically set to
140 o C. When trip threshold is exceeded, thermal
shutdown turns off both MOSFETs and
discharges the soft start capacitor.
Automatic restart is initiated when the sensed
temperature drops within the operating range.
There is a 20 o C hysteresis in the thermal
shutdown threshold.
Power Good Output
The IC continually monitors the output voltage via
Feedback (Fb pin). The Power Good signal is
flagged when the Fb pin voltage is above 0.5V
and between 85% to 115 % of Vp. This pin is
open drain and it needs to be externally pulled
high. High state indicates that output is in
regulation. Fig. 8a shows the PGood timing
diagram for non-tracking operation. In this case,
during startup, PGood goes high after the SS
voltage reaches 2.1V if the Fb voltage is within
the PGood comparator window. Fig. 8a. and Fig
8b. also show a 256 cycle delay between the Fb
voltage entering within the thresholds defined by
the PGood window and PGood going high.
TIMING DIAGRAM OF PGOOD FUNCTION
Fig.4A IR3832W Non-Tracking Operation
Fig.8b IR3832W Tracking Operation
Rev 6.0
15
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