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參數資料
| 型號： | TPS7228Y |
| 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穩壓器 |
| 文件頁數： | 1/36頁 |
| 文件大小： | 623K |
| 代理商： | TPS7228Y |
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TPS7201Q, TPS7225Q, TPS7228Q, TPS7230Q
TPS7233Q, TPS7248Q, TPS7250Q, TPS72xxY
MICROPOWER LOW-DROPOUT (LDO) VOLTAGE REGULATORS
SLVS102F – MARCH 1995 – REVISED NOVEMBER 1998
1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
Available in 5-V, 4.85-V, 3.3-V, 3.0-V, 2.75-V
§
,
and 2.5-V Fixed-Output and Adjustable
Versions
Dropout Voltage <85 mV Max at
I
O
= 100 mA (TPS7250)
Low Quiescent Current, Independent of
Load, 180
μ
A Typ
8-Pin SOIC and 8-Pin TSSOP Package
Output Regulated to
±
2% Over Full
Operating Range for Fixed-Output Versions
Extremely Low Sleep-State Current,
0.5
μ
A Max
Power-Good (PG) Status Output
description
The TPS72xx family of low-dropout (LDO) voltage
regulators offers the benefits of low-dropout
voltage, micropower operation, and miniaturized
packaging. These regulators feature extremely
low dropout voltages and quiescent currents
compared to conventional LDO regulators.
Offered in small-outline integrated-circuit (SOIC)
packages and 8-terminal thin shrink small-outline
(TSSOP), the TPS72xx series devices are ideal
for cost-sensitive designs and for designs where
board space is at a premium.
A combination of new circuit design and process
innovation has enabled the usual pnp pass
transistor to be replaced by a PMOS device.
Because the PMOS pass element behaves as a
low-value resistor, the dropout voltage is very low
– maximum of 85 mV at 100 mA of load current
(TPS7250) – and is directly proportional to the
load current (see Figure 1). Since the PMOS pass
element is a voltage-driven device, the quiescent current is very low (300
μ
A maximum) and is stable over the
entire range of output load current (0 mA to 250 mA). Intended for use in portable systems such as laptops and
cellular phones, the low-dropout voltage and micropower operation result in a significant increase in system
battery operating life.
The TPS72xx also features a logic-enabled sleep mode to shut down the regulator, reducing quiescent current
to 0.5
μ
A maximum at T
J
= 25
°
C. Other features include a power-good function that reports low output voltage
and may be used to implement a power-on reset or a low-battery indicator.
The TPS72xx is offered in 2.5-V, 2.75-V
§
, 3-V, 3.3-V, 4.85-V, and 5-V fixed-voltage versions and in an adjustable
version (programmable over the range of 1.2 V to 9.75 V). Output voltage tolerance is specified as a maximum
of 2% over line, load, and temperature ranges (3% for adjustable version).
§This device is in the product preview stage of development. Please contact the local TI sales office for availability.
Copyright
1998, Texas Instruments Incorporated
This document contains information on products in more than one phase
of development. The status of each device is indicated on the page(s)
specifying its electrical characteristics.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
1
2
3
4
8
7
6
5
SENSE
/FB
RESET/PG
GND
EN
OUT
OUT
IN
IN
D, P, OR PW PACKAGE
(TOP VIEW)
SENSE – Fixed voltage options only
(TPS7225, TPS7228
§
, TPS7230, TPS7233,
TPS7248, and TPS7250)
FB – Adjustable version only (TPS7201)
Figure 1. Typical Dropout Voltage Versus
Output Current
200
00
50
100
150
–
VD
400
200
250
100
300
IO – Output Current – mA
TPS7233
TPS7248
TPS7250
TA = 25
°
C
TPS7230
TPS7225
500
600
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相關代理商/技術參數 |
參數描述 |
|---|---|
| TPS72301DBVR | 功能描述:低壓差穩壓器 - LDO 200mA Low Noise High-PSRR 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:0.3 % 輸出端數量: 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 |
| TPS72301DBVRG4 | 功能描述:低壓差穩壓器 - LDO 200mA Low Noise High-PSRR 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:0.3 % 輸出端數量: 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 |
| TPS72301DBVT | 功能描述:低壓差穩壓器 - LDO 200mA Low Noise High-PSRR 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:0.3 % 輸出端數量: 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 |
| TPS72301DBVT | 制造商:Texas Instruments 功能描述:LINEAR VOLTAGE REGULATOR IC 制造商:Texas Instruments 功能描述:IC, ADJ LDO REG, -1.2V TO -10V, 5-SOT-23 |
| TPS72301DBVTG4 | 功能描述:低壓差穩壓器 - LDO 200mA Low Noise High-PSRR 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:0.3 % 輸出端數量: 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 |
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