Datasheet > S1F78520

S1F78520

更新时间： 2024-09-19 21:16:55

品牌	Logo	应用领域
精工 - SEIKO		光电二极管
页数	文件大小	规格书
20页	146K
描述
SWITCHED CAPACITOR REGULATOR, PDSO24, SSOP-24

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S1F78520 数据手册

PF1231-01

S1F78520

Charge-pump Step Down Regulator

with Power Saving Mode

■DESCRIPTION

The S1F78520 is a power IC which can generate two stabilized output voltages of 3.3 V (or 2.9 V or 2.5 V) and

2.5 V (or 2.0 V or 1.8 V) using the Li-ion battery. The 3.3 V range output is being generated through the LDO

(series regulator). The 2.5 V range output is being generated through the charge pump type DC/DC converter

consisting of built-in CMOS transistors. Since the voltages are being stabilized by adjustments of the charge

pump DC/DC switching frequencies, higher conversion efficiencies as compared with the conventional series

regulators can be acquired. Since the S1F78520 does not require external transistors, coils nor diodes, it is

most suitable for the down sizing purpose and for reduction of the current consumption.

■FEATURES

● Supply voltage ························································· 3.6 V ((TBD) 2.8 V to 5.5 V) single power input

● Voltage conversion method ····································· < 3.3V range output > LDO (series regulator)

< 2.5V range output > Voltage dropping type charge pump

● Output voltages ························································ < 3.3V range output > 3.3 V or 2.9 V or 2.5 V ± 3%

< 2.5V range output > 2.5 V or 2.0 V or 1.8 V ± 4%

● Output current (Normal state/Standby state) ··········· < 3.3V range output > Max. (100 mA/1 mA)

< 2.5V range output > Max. (80 mA/100 µA)

● Conversion efficiency ··············································· < 3.3V range output > 90%

< 2.5V range output > (TBD) 85% (Reference data: The

conversion efficiency from 3.3 V to 2.0 V by the series

regulator is 60%.)

● Shut down current ···················································· 1 µA

● Self-consumption current ········································· (TBD) 100 µA (under no load state)

● Built-in self-consumption current suppressing function by use of standby (light load) signals

Self-consumption current ········································· (TBD) 20 µA (under no load state)

● Switching frequency ················································· < 2.5V range output > (TBD) 1 MHz

● Built-in power good detector (equipped with the delay setting function)

● Built-in low voltage detecting circuit (For setting of the detecting voltages, either of the internal setting fixed to

the IC or the external pin setting is selectable.)

● Shipping state ·························································· SSOP3–24pin

● This IC is not of the radiation resistant design nor of the light resistance design.

Rev. 1.0

12 3 4 5 6 7...20

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与S1F78520相关器件

型号	品牌	获取价格	描述	数据表
S1F79100Y1B0	SEIKO	获取价格	5V FIXED NEGATIVE LDO REGULATOR, 0.34V DROPOUT, PSSO3, PLASTIC, SOT-89, 3 PIN
S1F79100Y1D0	SEIKO	获取价格	3V FIXED NEGATIVE LDO REGULATOR, 0.46V DROPOUT, PSSO3, PLASTIC, SOT-89, 3 PIN
S1F79100Y1G0	SEIKO	获取价格	1.8V FIXED NEGATIVE LDO REGULATOR, 0.7V DROPOUT, PSSO3, PLASTIC, SOT-89, 3 PIN
S1F79100Y1H0	SEIKO	获取价格	1.5V FIXED NEGATIVE LDO REGULATOR, 0.6V DROPOUT, PSSO3, PLASTIC, SOT-89, 3 PIN
S1F79100Y1P0	SEIKO	获取价格	4V FIXED NEGATIVE LDO REGULATOR, 0.38V DROPOUT, PSSO3, PLASTIC, SOT-89, 3 PIN
S1F81100D0E1000	SEIKO	获取价格	1A SWITCHING CONTROLLER, 1200kHz SWITCHING FREQ-MAX, UUC74, DIE-74
S1F81100D0F0000	SEIKO	获取价格	1A SWITCHING CONTROLLER, 1200kHz SWITCHING FREQ-MAX, UUC74, DIE-74
S1F81100F00A000	SEIKO	获取价格	SWITCHING CONTROLLER, 1200kHz SWITCHING FREQ-MAX, PQFP48, 4 X 4 MM, QFP12-48
S1F81100F00A00A	SEIKO	获取价格	SWITCHING CONTROLLER, 1200kHz SWITCHING FREQ-MAX, PQFP48, 4 X 4 MM, QFP12-48
S1F81100F00A00B	SEIKO	获取价格	SWITCHING CONTROLLER, 1200kHz SWITCHING FREQ-MAX, PQFP48, 4 X 4 MM, QFP12-48

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