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参数资料
| 型号： | S-1312B17-A4T1U3 |
| 元件分类： | 固定正电压单路输出LDO稳压器 |
| 英文描述： | FIXED POSITIVE LDO REGULATOR, PDSO4 |
| 封装： | HALOGEN FREE AND LEAD FREE, HSNT-4 |
| 文件页数： | 13/41页 |
| 文件大小： | 523K |
| 代理商： | S-1312B17-A4T1U3 |
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LOW CURRENT CONSUMPTION HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR
S-1312 Series
Rev.1.1_00
Seiko Instruments Inc.
20
4. Discharge shunt function (S-1312 Series A / B types)
The S-1312 Series A / B types have built-in discharge shunt circuits to discharge the output capacitance. The output
capacitance is discharged as follows so that the VOUT pin reaches the VSS level.
(1) The ON / OFF pin is set to power-off level.
(2) The output transistor is turned off.
(3) The discharge shunt circuit is turned on.
(4) The output capacitor discharges
Since the S-1312 Series C / D types do no have discharge shunt circuits, the VOUT pin is set to VSS level through
several hundred k
Ω internal divided resistors between the VOUT and VSS pins. The S-1312 Series A / B types allow
for the VOUT pin reach the VSS level rapidly due to the discharge shunt circuits.
Output transistor : OFF
ON / OFF Pin
: Power-off
VIN
ON / OFF
VSS
ON / OFF circuit
Discharge shunt function
: ON
VOUT
*1
*1. Parasitic diode
Current flow
GND
*1
S-1312 Series
Output
capacitance
(CL)
Figure 19
5. Pull-down resistor (S-1312 Series A / C types)
In the S-1312 Series A / C types, the ON / OFF pin is internally pulled down to VSS, so the VOUT pin is in the VSS level
when in the floating status.
IC’s current consumption increases as much as current flows into the pull-down resistor of 2.2 M
Ω typ. when the ON /
OFF pin is connected to VIN and the S-1312 Series A / C types is operating.
相关PDF资料 |
PDF描述 |
|---|---|
| S-1312B17-M5T1U3 | FIXED POSITIVE LDO REGULATOR, PDSO5 |
| S-1312B22-A4T1U3 | FIXED POSITIVE LDO REGULATOR, PDSO4 |
| S-1312B22-M5T1U3 | FIXED POSITIVE LDO REGULATOR, PDSO5 |
| S-1312B23-A4T1U3 | FIXED POSITIVE LDO REGULATOR, PDSO4 |
| S-1312B23-M5T1U3 | FIXED POSITIVE LDO REGULATOR, PDSO5 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| S-1312B18-A4T1U3 | 功能描述:IC REG LINEAR 150MA HSNT4-A 制造商:ablic u.s.a. inc. 系列:* 包装:剪切带（CT） 零件状态:在售 安装类型:表面贴装 封装/外壳:4-SMD，扁平引线裸焊盘 供应商器件封装:HSNT-4-A 标准包装:1 |
| S-1312B18-A4T2U3 | 功能描述:IC REG LINEAR 150MA HSNT4-B 制造商:ablic u.s.a. inc. 系列:* 包装:剪切带（CT） 零件状态:在售 安装类型:表面贴装 封装/外壳:4-SMD，扁平引线裸焊盘 供应商器件封装:HSNT-4-A 标准包装:1 |
| S-1312B19-M5T1U3 | 制造商:Seiko Instruments Inc (SII) 功能描述:150MA VOLT REG ULTRA LOW IQ |
| S-1312B1J-A4T1U3 | 制造商:Seiko Instruments Inc (SII) 功能描述:150MA VOLT REG ULTRA LOW IQ |
| S-1312B1J-M5T1U3 | 制造商:Seiko Instruments Inc (SII) 功能描述:150MA VOLT REG ULTRA LOW IQ |
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