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| 型号： | MAX1627ESA |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 6/16页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR BUCK PWM CM 8-SOIC |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 100 |
| PWM 型： | 电流模式 |
| 输出数： | 1 |
| 频率 - 最大： | 300kHz |
| 占空比： | 100% |
| 电源电压： | 3 V ~ 16.5 V |
| 降压： | 是 |
| 升压： | 无 |
| 回扫： | 无 |
| 反相： | 无 |
| 倍增器： | 无 |
| 除法器： | 无 |
| Cuk： | 无 |
| 隔离： | 无 |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 包装： | 管件 |
5V/3.3V or Adjustable, 100% Duty-Cycle,
High-Efficiency, Step-Down DC-DC Controllers
______________________________________________________________Pin Description
PIN
NAME
FUNCTION
MAX1626
MAX1627
Sense input for fixed 5V or 3.3V output operation. OUT is internally connected to an
1
1
OUT
on-chip voltage divider (MAX1626). It does not supply current. Leave OUT uncon-
nected during adjustable-output operation (MAX1627).
—
2
2
—
FB
3 /5
Feedback Input for adjustable-output operation. Connect to an external voltage
divider between the output and GND (see the Setting the Output Voltage section).
3.3V or 5V Selection. Output voltage is set to 3.3V when this pin is low or 5V when it
is high.
Active-High Shutdown Input. Device is placed in shutdown when SHDN is driven
3
3
SHDN
high. In shutdown mode, the reference, output, and external MOSFET are turned off.
Connect to GND for normal operation.
4
5
4
5
REF
V+
1.3V Reference Output. Can source 100μA. Bypass with 0.1μF.
Positive Supply Input. Bypass with 0.47μF.
Current-Sense Input. Connect current-sense resistor between V+ and CS. External
6
6
CS
MOSFET is turned off when the voltage across the resistor equals the current-limit
trip level (around 100mV).
7
8
INPUT
7
8
EXT
GND
Gate Drive for External P-Channel MOSFET. EXT swings between V+ and GND.
Ground
EXT
REF
C2
68 μ F LOW-ESR
TANTALUM
C3
68 μ F LOW-ESR
TANTALUM
C5
0.47 μ F
MAX1626
MAX1627
1.5V
MINIMUM ON-TIME
REF
ERROR
COMPARATOR
OUT
ONE-SHOT
Q
TRIG
R2
3/5
MAX1626
V+
R SENSE
0.04 ?
Q TRIG
MINIMUM OFF-TIME
ONE-SHOT
R1
R3
(FB)
CS
U1
3/5
22 μ H, 3A
C4
0.1 μ F
SHDN
REF
GND
EXT
OUT
D1
P
LOGIC-LEVEL MOSFET
L1
OUTPUT
C1
220 μ F
LOW-ESR
S
Q
R
SHDN
V+
TANTALUM
CURRENT-SENSE
CS
COMPARATOR
L1: SUMIDA CDRH125-220
D1: NIHON NSQ03A03
U1: MORTOLA MMSF3PO2HD
Figure 1. MAX1626 Typical Operating Circuit
Figure 2. Simplified Functional Diagram
( ) MAX1627 ONLY
MAX1626 ONLY
6
_______________________________________________________________________________________
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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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