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参数资料
| 型号： | MAX1627ESA |
| 厂商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分类： | 稳压器 |
| 英文描述： | 5V/3.3V or Adjustable, 100% Duty-Cycle, High-Efficiency, Step-Down DC-DC Controllers |
| 中文描述： | 0.05 A SWITCHING CONTROLLER, 300 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封装： | 0.150 INCH, MS-012A, SOIC-8 |
| 文件页数： | 6/16页 |
| 文件大小： | 185K |
| 代理商： | MAX1627ESA |
M
5V /3.3V or Adjustable, 100% Duty-Cyc le,
High-Effic ienc y, S tep-Down DC-DC Controllers
______________________________________________________________Pin Desc ription
6
_______________________________________________________________________________________
Ground
8
8
1.3V Reference Output. Can source 100μA. Bypass with 0.1μF.
4
4
Positive Supply Input. Bypass with 0.47μF.
5
5
Current-Sense Input. Connect current-sense resistor between V+ and CS. External
MOSFET is turned off when the voltage across the resistor equals the current-limit
trip level (around 100mV).
6
6
Gate Drive for External P-Channel MOSFET. EXT swings between V+ and GND.
7
7
Active-High Shutdown Input. Device is placed in shutdown when SHDN is driven
high. In shutdown mode, the reference, output, and external MOSFET are turned off.
Connect to GND for normal operation.
3
3
3.3V or 5V Selection. Output voltage is set to 3.3V when this pin is low or 5V when it
is high.
—
2
Feedback Input for adjustable-output operation. Connect to an external voltage
divider between the output and GND (see the Setting the Output Voltage section).
2
—
Sense input for fixed 5V or 3.3V output operation. OUT is internally connected to an
on-chip voltage divider (MAX1626). It does not supply current. Leave OUT uncon-
nected during adjustable-output operation (MAX1627).
1
1
GND
REF
V+
CS
EXT
SHDN
3
/5
FB
OUT
MAX1626
C5
0.47
μ
F
P
D1
R
0.04
U1
LOGIC-LEVEL MOSFET
C4
0.1
μ
F
3/5
SHDN
REF
V+
EXT
CS
GND
OUT
INPUT
H, 3A
22
μ
C1
220
μ
F
LOW-ESR
TANTALUM
C2
68
μ
F LOW-ESR
TANTALUM
C3
68
μ
F LOW-ESR
TANTALUM
L1: SUMIDA CDRH125-220
U1: MORTOLA MMSF3PO2HD
OUTPUT
Figure 1. MAX1626 Typical Operating Circuit
MAX1626
MAX1627
MINIMUM ON-TIME
ONE-SHOT
Q
S
OUT
(FB)
3/5
R3
R2
R1
SHDN
V+
CS
R
TRIG
Q
MINIMUM OFF-TIME
ONE-SHOT
CURRENT-SENSE
COMPARATOR
ERROR
COMPARATOR
REF
1.5V
EXT
REF
( ) MAX1627 ONLY
MAX1626 ONLY
TRIG
Q
Figure 2. Simplified Functional Diagram
PIN
MAX1626
FUNCTION
MAX1627
NAME
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1627ESA+ | 功能描述:DC/DC 开关控制器 5/3.3V or Adjustable 100% Duty Cycle RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| MAX1627ESA+ | 制造商:Maxim Integrated Products 功能描述:CONTROLLER STEP DOWN DC-DC 1627 制造商:Maxim Integrated Products 功能描述:CONTROLLER, STEP DOWN, DC-DC, 1627 |
| MAX1627ESA+G071 | 功能描述:DC/DC 开关控制器 Adjustable 100% Duty-Cycle High-Efficiency Step-Down DC-DC Controller RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| MAX1627ESA+T | 功能描述:DC/DC 开关控制器 5/3.3V or Adjustable 100% Duty Cycle RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| MAX1627ESA+TG071 | 功能描述:DC/DC 开关控制器 5V/3.3V or Adjustable 100% Duty Cycle High-Efficiency Step-Down DC-DC Controllers RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
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