L5964集成电路（IC）的线性稳压器控制器规格书PDF中文资料

L5964属于集成电路（IC）的线性稳压器控制器。由意法半导体集团制造生产的L5964稳压器 - 线性 + 开关此产品族中的产品用于构建执行 DC-DC 转换或电压调节功能的电路，采用的是开关模式和线性稳压器功能的组合。虽然具体的拓扑各不相同，但此类产品的主要目的是将开关模式技术的效率优势与线性稳压技术的低噪声特性结合在一起。

特性 Features

 AEC-Q100 qualified

 Two step-down synchronous switching voltage

regulators with internal power switches:

– Output voltage selectable by external

divider (feedback voltage at 0.9 V)

– Minimum and maximum output is limited by

minimum and maximum duty cycle

– Internal high-side/ low-side NDMOS

– 270 kHz and 2.2 MHz selectable free-run

frequencies

– 125 kHz < f < 2.3 MHz synchronization

range at SYNCIN pin

– Programmable current limits at 2 A and

3.5A (> 2 A requires the addition of external

schottky diodes)

– Independent hardware enabling pins

– Independent supply inputs

– 180° phase shift between outputs

– Synch out 90° phase shift vs DC-DC1

– Programmable switching frequency divider

by 1, 2, 4, 8 between the two regulators

– The two buck converters can be connected

in parallel (for evaluation purposes only)

 Independent voltage supervisors/power-goods

with selectable thresholds through external pin:

– two available thresholds for UV/OV/PG

signals: 90-120-95 or 80-110-85

(output voltage percentage)

 Soft-start, thermal protection

 One standby/linear regulator:

– Output selectable with external resistor

divider till 10 V

– Soft start, hardware enable pin

– 250 mA maximum current capability

– Standby operative mode

– Programmable power good thresholds

(85 or 95 output voltage percentage)

– Thermal protection

 Microcontroller reset with programmable

duration, activated by output under voltage or

watchdog fault

 External High Side Driver enable pin

 One integrated window watchdog (5 ms ≤

window ≤ 50 ms, with ± 20 tolerance)

 Short circuit protected outputs

 Low external components number

 Thermal shutdown junction temperature 150°C