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參數資料
| 型號： | MAX1692 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | Low-Noise, 5.5V-Input, PWM Step-Down Regulator |
| 中文描述： | 低噪聲、5.5V輸入、PWM降壓型穩(wěn)壓器 |
| 文件頁數： | 1/12頁 |
| 文件大?。?/td> | 150K |
| 代理商： | MAX1692 |
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.
For small orders, phone 1-800-835-8769.
General Desc ription
The MAX1692 is a low-noise, pulse-width-modulated
(PWM), DC-DC step-down converter. It powers logic
and transmitters in small wireless systems such as cellu-
lar phones, communicating PDAs, and handy-terminals.
The device features an internal synchronous rectifier for
high efficiency; it requires no external Schottky diode.
Excellent noise characteristics and fixed-frequency
operation provide easy post-filtering. The MAX1692 is
ideally suited for Li-Ion battery applications. It is also
useful for +3V or +5V fixed input applications.
The device operates in one of four modes. Forced PWM
mode operates at a fixed frequency regardless of the
load. Synchronizable PWM mode allows an external
switching frequency to control and minimize harmonics.
Idle Mode (PWM/PFM) extends battery life by switch-
ing to a PFM pulse-skipping mode during light loads.
Shutdown mode places the device in standby, reduc-
ing quiescent supply current to under 0.1μA.
The MAX1692 can deliver over 600mA. The output volt-
age can be adjusted from 1.25V to V
IN
with the input
range of +2.7V to +5.5V. Other features of the
MAX1692 include high efficiency, low dropout voltage,
and a 1.2%-accurate 1.25V reference. It is available in
a space-saving 10-pin μMAX package with a height of
only 1.11mm.
Applic ations
CPU I/O Supplies
Notebook Chipset Supplies
Battery-Operated Devices
(1 Li-Ion or 3 NiMH/NiCd)
Cellular Phones
Cordless Phones
PDAs and Handy-Terminals
Features
o
+2.7V to +5.5V Input Range
o
Adjustable Output from 1.25V to V
IN
o
600mA Guaranteed Output Current
o
95% Efficiency
o
No Schottky Diode Required
o
85μA Quiescent Current
o
100% Duty Cycle in Dropout
o
750kHz Fixed-Frequency PWM Operation
o
Synchronizable Switching Frequency
o
Accurate Reference: 1.25V (±1.2%)
o
Small 10-Pin μMAX Package
M
Low-Noise, 5.5V-Input,
PWM S tep-Down Regulator
________________________________________________________________ Maxim Integrated Products
1
1
2
3
4
5
10
9
8
7
6
PGND
LX
SHDN
SYNC/PWM
REF
GND
BP
IN
MAX1692
TOP VIEW
LIM
FB
μ
MAX
19-1400; Rev 0; 11/98
EVALUATION KIT MANUAL
PART
MAX1692EUB
-40°C to +85°C
TEMP. RANGE
PIN-PACKAGE
10 μMAX
FOLLOWS DATA SHEET
Idle Mode is a trademark of Maxim Integrated Products.
Pin Configuration
Ordering Information
Typic al Operating Circ uit
MAX1692
FB
SYNC/PWM
PGND
BP
LIM
LX
SHDN
IN
L
C2
R1
R2
C4
C3
C1
V
IN
= 2.7V TO5.5V
V
OUT
= 1.25V TOV
IN
AGND
REF
相關PDF資料 |
PDF描述 |
|---|---|
| MAX1692EUB | Low-Noise, 5.5V-Input, PWM Step-Down Regulator |
| MAX1719 | Replaced by TMS320VC5506 : Digital Signal Processors 132-BQFP 0 to 0 |
| MAX1719EUT | Replaced by TMS320VC5506 : Digital Signal Processors 100-LQFP 0 to 0 |
| MAX1721EUT | Replaced by TMS320VC5506 : Digital Signal Processors 132-BQFP 0 to 0 |
| MAX1720EUT | SOT23, Switched-Capacitor Voltage Inverters with Shutdown |
相關代理商/技術參數 |
參數描述 |
|---|---|
| MAX16920AATJ/V+ | 功能描述:PMIC 解決方案 Multiple-Output Power Supply RoHS:否 制造商:Texas Instruments 安裝風格:SMD/SMT 封裝 / 箱體:QFN-24 封裝:Reel |
| MAX16920AATJ/V+T | 功能描述:PMIC 解決方案 Multiple-Output Power Supply RoHS:否 制造商:Texas Instruments 安裝風格:SMD/SMT 封裝 / 箱體:QFN-24 封裝:Reel |
| MAX16920BATJ/V+ | 功能描述:PMIC 解決方案 Multiple-Output Power Supply RoHS:否 制造商:Texas Instruments 安裝風格:SMD/SMT 封裝 / 箱體:QFN-24 封裝:Reel |
| MAX16920BATJ/V+T | 功能描述:PMIC 解決方案 Multiple-Output Power Supply RoHS:否 制造商:Texas Instruments 安裝風格:SMD/SMT 封裝 / 箱體:QFN-24 封裝:Reel |
| MAX16920BATJS/V+ | 功能描述:PMIC 解決方案 Multiple-Output Power Supply RoHS:否 制造商:Texas Instruments 安裝風格:SMD/SMT 封裝 / 箱體:QFN-24 封裝:Reel |
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