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參數(shù)資料
| 型號： | MAX1792EUA25 |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | 500mA Low-Dropout Linear Regulator in レMAX |
| 中文描述： | FIXED/ADJUSTABLE POSITIVE LDO REGULATOR, 0.36 V DROPOUT, PDSO8 |
| 封裝： | POWER, MICRO MAX PACKAGE-8 |
| 文件頁數(shù)： | 9/10頁 |
| 文件大?。?/td> | 414K |
| 代理商： | MAX1792EUA25 |
duction path from the die to the PC board. Additionally,
the MAX1792
’
s ground pin (GND) performs the dual
function of providing an electrical connection to system
ground and channeling heat away. Connect the
exposed backside pad and GND to the system ground
using a large pad or ground plane, or multiple vias to
the ground plane layer.
The MAX1792 delivers up to 0.5A
(RMS)
and operates
with input voltages up to 5.5V, but not simultaneously.
High output currents can only be sustained when input-
output differential voltages are low, as shown in Figure 3.
Applications Information
Capacitor Selection
and Regulator Stability
Capacitors are required at the MAX1792
’
s input and
output for stable operation over the full temperature
range and with load currents up to 500mA. Connect a
1μF capacitor between IN and ground and a 3.3μF low
equivalent series resistance (ESR) capacitor between
OUT and ground. For output voltages less than 2V, use
a 4.7μF low-ESR output capacitor. The input capacitor
(C
IN
) lowers the source impedance of the input supply.
Reduce noise and improve load-transient response,
stability, and power-supply rejection by using larger
output capacitors such as 10μF.
The output capacitor
’
s (C
OUT
) ESR affects stability and
output noise. Use output capacitors with an ESR of
0.1
or less to ensure stability and optimum transient
response. Surface-mount ceramic capacitors have very
low ESR and are commonly available in values up to
10μF. Connect C
IN
and C
OUT
as close to the MAX1792
as possible to minimize the impact of PC board trace
inductance.
Noise, PSRR, and Transient Response
The MAX1792 is designed to operate with low dropout
voltages and low quiescent currents in battery-powered
systems while still maintaining good noise, transient
response, and AC rejection. See the
Typical Operating
Characteristics
for a plot of Power-Supply Rejection
Ratio (PSRR) vs. Frequency. When operating from
noisy sources, improved supply-noise rejection and
transient response can be achieved by increasing the
values of the input and output bypass capacitors and
through passive filtering techniques.
The MAX1792 load-transient response graphs (see
Typical Operating Characteristics
) show two compo-
nents of the output response: a DC shift from the output
impedance due to the load current change, and the
transient response. A typical transient response for a
step change in the load current from 5mA to 500mA is
18mV. Increasing the output capacitor
’
s value and
decreasing the ESR attenuates the overshoot.
Input-Output (Dropout) Voltage
A regulator
’
s minimum input-to-output voltage differen-
tial (dropout voltage) determines the lowest usable sup-
ply voltage. In battery-powered systems, this
determines the useful end-of-life battery voltage.
Because the MAX1792 uses a P-channel MOSFET pass
transistor, its dropout voltage is a function of drain-to-
source on-resistance (R
DS(ON)
) multiplied by the load
current (see
Typical Operating Characteristics
):
V
DROPOUT
= V
IN
- V
OUT
= R
DS(ON)
x I
OUT
The MAX1792 ground current remains below 150μA in
dropout.
Note:
The MAX1792 has an exposed thermal pad on
the bottom side of the package.
M
500mA Low-Dropout
Linear Regulator in μMAX
_______________________________________________________________________________________
9
Figure 3. Power Operating Regions: Maximum Output Current
vs. Supply Voltage
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
M
4.0
4.5
0
0.5
3.5
3.0
2.5
2.0
1.5
1.0
INPUT-OUTPUT VOLTAGE DIFFERENTIAL (V)
MAXIMUM SUPPLY
VOLTAGE LIMIT
(V
OUT
= 1.25V)
POWER-
μ
MAX PACKAGE OPERATING
REGION AT T
J(MAX)
= +150
°
C
T
A
= +50
°
C
T
A
= +70
°
C
T
A
= +85
°
C
CONTINUOUS CURRENT LIMIT
T
D
Chip Information
TRANSISTOR COUNT: 845
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MAX1792EUA33 | Replaced by TMS320C6722B : Digital Signal Processor 181-CPGA |
| MAX1792EUA__ | Replaced by TMS320VC33 : Digital Signal Processor 132-BQFP -40 to 85 |
| MAX1792EUA50 | 500mA Low-Dropout Linear Regulator in レMAX |
| MAX1793 | Replaced by TMS320VC33 : Digital Signal Processor 132-BQFP 0 to 70 |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX1792EUA25/V+ | 功能描述:IC REG LDO 2.5V/ADJ .5A 8-UMAX RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 線性 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:- 穩(wěn)壓器拓?fù)浣Y(jié)構(gòu):正，固定式或可調(diào)式 輸出電壓:3.3V，2.5 V ~ 11 V 輸入電壓:6.5 V ~ 45 V 電壓 - 壓降（標(biāo)準(zhǔn)）:0.9V @ 400mA 穩(wěn)壓器數(shù)量:1 電流 - 輸出:400mA（最?。?電流 - 限制（最?。?- 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:16-WQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:16-TQFN-EP（5x5） 包裝:帶卷 (TR) |
| MAX1792EUA25/V+T | 功能描述:IC REG LDO 2.5V/ADJ .5A 8-UMAX RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 線性 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:- 穩(wěn)壓器拓?fù)浣Y(jié)構(gòu):正，固定式或可調(diào)式 輸出電壓:3.3V，2.5 V ~ 11 V 輸入電壓:6.5 V ~ 45 V 電壓 - 壓降（標(biāo)準(zhǔn)）:0.9V @ 400mA 穩(wěn)壓器數(shù)量:1 電流 - 輸出:400mA（最?。?電流 - 限制（最?。?- 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:16-WQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:16-TQFN-EP（5x5） 包裝:帶卷 (TR) |
| MAX1792EUA25+ | 功能描述:低壓差穩(wěn)壓器 - LDO 500mA 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(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 |
| MAX1792EUA25+T | 功能描述:低壓差穩(wěn)壓器 - LDO 500mA 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(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 |
| MAX1792EUA25+TG069 | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
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