參數(shù)資料
型號(hào)： MAX1685
廠商： Maxim Integrated Products, Inc.
英文描述： Low-Noise, 14V Input, 1A, PWM Step-Down Converters
中文描述： 低噪聲、14V輸入、1A、PWM降壓型轉(zhuǎn)換器
文件頁(yè)數(shù)： 7/16頁(yè)
文件大?。?/td> 234K
代理商： MAX1685
M
Low-Noise, 14V Input, 1A, PWM
S tep-Down Converters
_______________________________________________________________________________________
7
Pin Desc ription
Typic al Operating Charac teristic s (c ontinued)
(Circuit of Figure 1, T
A
= +25°C, unless otherwise noted.)
V
IN
5V/div
0V
V
OUT
100mV/div
2ms/div
LINE-TRANSIENT RESPONSE
MAX1684, I
LOAD
= 100mA, V
IN
= 5V TO10V,
SYNC/PWM = 3.3V
V
SHDN
5V/div
I
IN
50mA/div
10ms/div
START-UP CURRENT
MAX1684/85-20
MAX1684, I
LOAD
= 100mA, V
= 3.3V,
V
IN
= 5V, C
ILIM/SS
= 0.1
μ
F, SYNC/PWM = 3.3V
PIN
High-Side MOSFET Gate Bias. Bias voltage for P-channel switch. Bypass to IN with a 0.1μF capacitor.
Analog Supply Voltage Input. Connect to IN with a 0.2 in. metal trace. Bypass to PGND with a 0.1μF
capacitor.
Supply Voltage Input
CVH
1
FUNCTION
NAME
AIN
2
Logic Supply Voltage Output and IC Logic Supply. Sources 5mA for external loads. Bypass to AGND
with 1μF capacitor.
Analog Ground
CVL
4
IN
3
Reference Output. 1.25V reference output supplies 10μA for external loads. Bypass to AGND with 0.1μF
capacitor.
REF
6
Integrator Capacitor Connection. Connect a 0.01μF capacitor to AGND.
CC
8
Dual Mode Feedback Input. Connect FB to V
OUT
for 1.25V output. Connect to an external resistor divider
to adjust the output voltage. Connect to AGND to set output voltage to 3.3V.
FB
7
AGND
5
Current-Limit Adjust/Soft-Start Input. See Current Limit and Soft-Startsection.
Standby Control Input. Connect to CVL for normal operation. Connect to AGND for low-power mode
(Table 1). This pin overrides SYNC/PWM setting.
ILIM/SS
10
Bootstrap Input. Connection for the bootstrap switch and internal feedback path. Connect BOOT to V
OUT
for V
OUT
< 5.5V. Connect BOOT to AGND for V
OUT
> 5.5V.
Inductor Connection. Drain for internal P-channel MOSFETs. Connect inductor from LX to OUT.
BOOT
12
STBY
11
Active-Low Shutdown Input. Connect to ground for shutdown.
SHDN
can withstand the input voltage.
Power Ground
SHDN
PGND
15
16
LX
13, 14
SYNC/PWM Input:
For synchronized-PWM operation, drive with TTL level, 50% square wave.
Connect to CVL for PWM mode.
Connect to AGND for normal mode.
SYNC/PWM
9
相關(guān)PDF資料
PDF描述
MAX1685EEE Low-Noise, 14V Input, 1A, PWM Step-Down Converters
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX1685EEE 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 14V 1A PWM Step-Down Converter RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT
MAX1685EEE+ 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 14V 1A PWM Step-Down Converter RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT
MAX1685EEE+T 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 14V 1A PWM Step-Down Converter RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT
MAX1685EEE-T 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 14V 1A PWM Step-Down Converter RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT
MAX1685EVKIT 功能描述:電源管理IC開發(fā)工具 Evaluation Kit for the MAX1684 MAX1685 RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:Battery Management 工具用于評(píng)估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V
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