參數(shù)資料
型號(hào): TPS7233Q
廠商: Texas Instruments, Inc.
元件分類: 基準(zhǔn)電壓源/電流源
英文描述: Low-Dropout Voltage Regulators(微功耗,低壓差PMOS穩(wěn)壓器,工作溫度-55~150℃)
中文描述: 低壓差穩(wěn)壓器(微功耗,低壓差PMOS管穩(wěn)壓器,工作溫度-55?150℃)
文件頁(yè)數(shù): 27/32頁(yè)
文件大?。?/td> 826K
代理商: TPS7233Q
TPS7201Q, TPS7233Q, TPS7248Q, TPS7250Q
TPS7201Y, TPS7233Y, TPS7248Y, TPS7250Y
MICROPOWER LOW-DROPOUT (LDO) VOLTAGE REGULATORS
SLVS102D – MARCH 1995 – REVISED DECEMBER 1995
27
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
output voltage programming
The output voltage of the TPS7201 adjustable regulator is programmed using an external resistor divider as
shown in Figure 35. The output voltage is calculated using:
VO
Vref
1
R1
R2
(1)
where
V
ref
= 1.188 V typ (the internal reference voltage)
Resistors R1 and R2 should be chosen for approximately 7-
μ
A divider current. Lower value resistors can be
used but offer no inherent advantage and waste more power. Higher values should be avoided as leakage
currents at FB increase the output voltage error. The recommended design procedure is to choose
R2 = 169 k
to set the divider current at 7
μ
A and then calculate R1 using:
R1
VO
Vref
1
R2
(2)
VO
VI
0.1
μ
F
PG
OUT
FB
R2
GND
EN
IN
<0.4 V
>2.7 V
TPS7201
Power-Good Indicator
250 k
OUTPUT
VOLTAGE
(V)
R1
R2
2.5
3.3
3.6
4
5
6.4
191
309
348
402
549
750
169
169
169
169
169
169
OUTPUT VOLTAGE
PROGRAMMING GUIDE
DIVIDER RESISTANCE
(k
)
1% values shown.
10
μ
F
CSR = 1
IN
5
6
4
2
8
7
1
3
+
OUT
R1
Figure 35. TPS7201 Adjustable LDO Regulator Programming
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TPS7233QD 功能描述:低壓差穩(wěn)壓器 - LDO LDO PMOS Voltage 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(dòng)電壓(最大值):307 mV 輸出電流:1 A 負(fù)載調(diào)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(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20
TPS7233QD 制造商:Texas Instruments 功能描述:IC's
TPS7233QD 制造商:Texas Instruments 功能描述:IC V REG LDO 3.3V SOIC8
TPS7233QDG4 功能描述:低壓差穩(wěn)壓器 - LDO LDO PMOS Voltage 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(dòng)電壓(最大值):307 mV 輸出電流:1 A 負(fù)載調(diào)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(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20
TPS7233QDR 功能描述:低壓差穩(wěn)壓器 - LDO LDO PMOS Voltage 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(dòng)電壓(最大值):307 mV 輸出電流:1 A 負(fù)載調(diào)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(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20