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参数资料
| 型号： | S-812C26AY-Z |
| 元件分类： | 固定正电压单路输出LDO稳压器 |
| 英文描述： | 2.6 V FIXED POSITIVE LDO REGULATOR, 0.68 V DROPOUT, PBCY3 |
| 封装： | TO-92, 3 PIN |
| 文件页数： | 8/49页 |
| 文件大小： | 873K |
| 代理商： | S-812C26AY-Z |
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HIGH OPERATING VOLTAGE CMOS VOLTAGE REGULATOR
S-812C Series
Rev.2.0_01
16
Seiko Instruments Inc.
Selection of External Components
1. Output Capacitor (CL)
The S-812C series can provide stable operation without output capacitor (CL) since the regulator has an
internal phase compensation circuit to stabilize operation when the load changes. The transient response
of the regulator, however, changes with the output capacitor and the magnitude of overshoot and
undershoot on output voltage accordingly changes. Please refer to CL dependence data in “ Reference
Data 1. Transient Response Characteristics” to select suitable value for the capacitor.
When a tantalum or an aluminum electrolytic capacitor is used, the ESR of the capacitor shall be 10
or
less. When an aluminum electrolytic capacitor is used attention should be especially paid to since the
ESR of the aluminum electrolytic capacitor increases at low temperature and possibility of oscillation
becomes large. Sufficient evaluation including temperature characteristics is indispensable.
Application Circuit
1. Output Current Boosting Circuit
As shown in Figure 17, the output current can be boosted by externally attaching a PNP transistor.
The S-812C controls the base current of the PNP transistor so that the output voltage VOUT becomes
the voltage specified in the S-812C if the sufficient base-emitter voltage VBE to turn on the PNP
transistor is obtained between input voltage VIN and S-812C power source pin VIN.
As the transient response characteristics of the circuit shown in Figure 17 is not enough in some
applications, evaluation for output variation due to power-on, power line variation and load variation in
actual condition is needed before massproduction.
Note that the short-circuit protection incorporated in the S-812C series does not work as a short-circuit
protection for the boost circuit.
R1
Tr1
GND
VOUT
ON/OFF
VIN
VSS
VIN
VOUT
CL
S-812C
Series
CIN
Figure 17
相关PDF资料 |
PDF描述 |
|---|---|
| S-812C28AY-B | 2.8 V FIXED POSITIVE LDO REGULATOR, 0.68 V DROPOUT, PBCY3 |
| S-812C44AUA-C2Y-T2 | 4.4 V FIXED POSITIVE LDO REGULATOR, 0.3 V DROPOUT, PSSO3 |
| S-812C47AUA-C3B-T2 | 4.7 V FIXED POSITIVE LDO REGULATOR, 0.27 V DROPOUT, PSSO3 |
| S-812C51AY-B | 5.1 V FIXED POSITIVE LDO REGULATOR, 0.25 V DROPOUT, PBCY3 |
| S-812C53AMC-C3H-T2 | 5.3 V FIXED POSITIVE LDO REGULATOR, 0.25 V DROPOUT, PDSO5 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| S-812C26BMC-C4GT2G | 功能描述:低压差稳压器 - LDO Linear LDO Reg 1.0uA Iq 75mA Iout ON/OFF RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20 |
| S-812C26BPI-C4GTFG | 功能描述:低压差稳压器 - LDO Linear LDO reg 1.0uA Iq 75mA Iout ON/OFF RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20 |
| S-812C27AMC-C2H-T2 | 功能描述:低压差稳压器 - LDO 2.7V 1.0uA 2.0% RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20 |
| S-812C27AMC-C2HT2G | 功能描述:低压差稳压器 - LDO 2.7V 1.0uA 2.0% RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20 |
| S-812C27AMC-C2HT2U | 功能描述:IC REG LINEAR 30MA SOT23-5 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:SC-74A，SOT-753 供应商器件封装:SOT-23-5 标准包装:1 |
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