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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： | 7/49页 |
| 文件大小： | 873K |
| 代理商： | S-812C26AY-Z |
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HIGH OPERATING VOLTAGE CMOS VOLTAGE REGULATOR
Rev.2.0_01
S-812C Series
Seiko Instruments Inc.
15
3. Shutdown function (ON/OFF pin)
The ON/OFF pin controls the start and stop of the regulation operation.
When the ON/OFF pin is set to shutdown level, halting whole internal circuit and turning off the Pch MOS
FET between VIN and VOUT pins, current consumption is drastically reduced. The voltage of the VOUT
pin becomes VSS level due to the internal resistance divider of several M
between VOUT and VSS.
The ON/OFF pin should not be left afloat since no pull-up nor pull-down is made internally as shown in
Figure 16. Note also that a current will flow to the VIN side via the parasitic diode inside the IC if a
voltage of VIN + 0.3 V or more is applied. When the shutdown function is not used, connect the pin to the
VIN pin in case of positive logic and to the VSS pin in case of negative logic.
When a regulation operation at light load less than 100
A is halted, output voltage may increase. If the
increase of the output voltage should be avoided, pull down the VOUT pin to the VSS level as soon as
ON/OFF pin goes to the shutdown level.
Table 10
Logic Type
ON/OFF Pin
Internal Circuits
VOUT Pin Voltage
Current Consumption
B
“L”: Power off
Stopped
VSS level
ISS2
B
“H”: Power on
Operating
Set value
ISS1
VIN
ON/OFF
VSS
Figure 16
4. Short-circuit protection
Installation of the short-circuit protection which protects the output transistor against short-circuit between
VOUT and VSS can be selected in the S-812C series. The short-circuit protection controls output current
as shown in the typical characteristics, (1) OUTPUT VOLTAGE versus OUTPUT CURRENT, and
suppresses output current at about 40 mA even if VOUT and VSS pins are short-circuited.
The short-circuit protection can not at the same time be a thermal protection. Attention should be paid to
the Input voltage and the load current under the actual condition so as not to exceed the power
dissipation of the package including the case for short-circuit.
When the output current is large and the difference between input and output voltage is large even if not
shorted, the short-circuit protection may work and the output current is suppressed to the specified value.
Products without short-circuit protection can provide comparatively large current by removing a short-
circuit protection.
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PDF描述 |
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| 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 |
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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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