參數(shù)資料
型號: TPS7233QPWG4
廠商: Texas Instruments, Inc.
英文描述: MICROPOWER LOW-DROPOUT (LDO) VOLTAGE REGULATORS
中文描述: 微功率低壓差(LDO)穩(wěn)壓器
文件頁數(shù): 29/37頁
文件大小: 581K
代理商: TPS7233QPWG4
TPS7201Q, TPS7225Q, TPS7230Q
TPS7233Q, TPS7248Q, TPS7250Q, TPS72xxY
MICROPOWER LOW-DROPOUT (LDO) VOLTAGE REGULATORS
SLVS102G – MARCH 1995 – REVISED JUNE 2000
29
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 33. 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 33. TPS7201 Adjustable LDO Regulator Programming
相關PDF資料
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相關代理商/技術參數(shù)
參數(shù)描述
TPS7233QPWR 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
TPS7233QPWRG4 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
TPS7248QD 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
TPS7248QDG4 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
TPS7248QDR 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