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參數(shù)資料
| 型號： | S-1701E3327-U5T1U |
| 元件分類： | 固定正電壓單路輸出LDO穩(wěn)壓器 |
| 英文描述： | 3.3 V FIXED POSITIVE LDO REGULATOR, 0.21 V DROPOUT, PDSO5 |
| 封裝： | HALOGEN FREE AND LEAD FREE, SOT-89, 5 PIN |
| 文件頁數(shù)： | 37/71頁 |
| 文件大?。?/td> | 582K |
| 代理商： | S-1701E3327-U5T1U |
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HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR WITH RESET FUNCTION
S-1701 Series
Rev.3.0_00
Seiko Instruments Inc.
42
Detector block
1. Basic operation
Figure 36 shows a block diagram of the detector block.
Ra
Rb
Rc
*1
*1.
Parasitic diode
VSS
Current
supply
+
VIN
VSENSE
Vref
N1
VDOUT
Nch
Delay circuit
Figure 36 Block Diagram (Detector Block)
(1) When the SENSE voltage (VSENSE) is higher than the release voltage (
+VDET), the Nch transistor is OFF and VIN
(high) is output.
Since the Nch transistor N1 in Figure 36 is OFF, the comparator input voltage is
(Rb
+Rc) VSENSE
Ra
+Rb+Rc
.
(2) When VSENSE goes below
+VDET, VIN is output, as long as VSENSE remains above the detection voltage (VDET).
When the VSENSE falls below
VDET, the Nch transistor becomes ON and VSS is output. At this time, the Nch
transistor N1 in Figure 36 becomes ON, and the comparator input voltage is changed to
Rb
VSENSE
Ra
+Rb
.
(3) When VIN falls below the minimum operating voltage, the output becomes undefined. In this case the output
becomes VIN because it is pulled up.
(4) VSS is output when VIN rises above the minimum operating voltage. The VSS level still appears even when VSENSE
surpasses
VDET, as long as it does not exceed the release voltage +VDET. When VSENSE rises above +VDET, the
Nch transistor becomes OFF and VIN is output. VIN at the VDOUT pin is delayed for tD due to the delay circuit.
(5) In the S-1701 Series, the detection voltage can be set within the range of 1.5 V to 5.5 V (operating voltage range:
0.8 V to 6.5 V).
相關PDF資料 |
PDF描述 |
|---|---|
| S-1701E3330-M5T1U | 3.3 V FIXED POSITIVE LDO REGULATOR, 0.21 V DROPOUT, PDSO5 |
| S-1701F2722-M5T1U | 2.7 V FIXED POSITIVE LDO REGULATOR, 0.25 V DROPOUT, PDSO5 |
| S-1701G3331-M5T1U | 3.3 V FIXED POSITIVE LDO REGULATOR, 0.21 V DROPOUT, PDSO5 |
| S-1701N2724-M5T1U | 2.7 V FIXED POSITIVE LDO REGULATOR, 0.25 V DROPOUT, PDSO5 |
| S-1701N2724-U5T1U | 2.7 V FIXED POSITIVE LDO REGULATOR, 0.25 V DROPOUT, PDSO5 |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| S-1701E3328-M5T1G | 功能描述:低壓差穩(wěn)壓器 - LDO Combo Volt Detct/Reg 85uA Iq 400mA Iout RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負載調節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| S-1701E3328-U5T1G | 功能描述:低壓差穩(wěn)壓器 - LDO Combo Volt Detec/Reg 85uA Iq 400mA Iout RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負載調節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| S-1701E3330-M5T1G | 制造商:SII 制造商全稱:Seiko Instruments Inc 功能描述:HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR WITH RESET FUNCTION |
| S-1701E3430-M5T1G | 制造商:SII 制造商全稱:Seiko Instruments Inc 功能描述:HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR WITH RESET FUNCTION |
| S-1701E3430-U5T1G | 制造商:SII 制造商全稱:Seiko Instruments Inc 功能描述:HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR WITH RESET FUNCTION |
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