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參數(shù)資料
| 型號： | MAX1626 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | 5V/3.3V or Adjustable, 100% Duty-Cycle, High-Efficiency, Step-Down DC-DC Controllers(降壓型,輸出電壓5V/3.3V，輸出電流2A的DC-DC變換器) |
| 中文描述： | 5V/3.3V或可調、100%占空比、高效率、降壓型DC-DC控制器 |
| 文件頁數(shù)： | 6/16頁 |
| 文件大?。?/td> | 222K |
| 代理商： | MAX1626 |
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
相關PDF資料 |
PDF描述 |
|---|---|
| MAX1627 | 5V/3.3V or Adjustable, 100% Duty-Cycle, High-Efficiency, Step-Down DC-DC Controllers(降壓型,輸出電壓5V/3.3V，輸出電流2A的DC-DC變換器) |
| MAX164 | CMOS 12Bits ADC With Track and Hold(100ksps,12位，單通道,并行ADC) |
| MAX163 | CMOS 12Bits ADC With Track and Hold(100ksps,單通道，并行,12位ADC) |
| MAX167 | CMOS 12Bits ADC With Track and Hold(100ksps,12位，單通道,并行ADC) |
| MAX165 | CMOS レP-Compatible, 5レs, 8-Bit ADCs |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| MAX1626C/D DIE | 制造商:Maxim Integrated Products 功能描述: |
| MAX1626ESA | 功能描述:DC/DC 開關控制器 5/3.3V or Adjustable 100% Duty Cycle RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK |
| MAX1626ESA+ | 功能描述:DC/DC 開關控制器 5/3.3V or Adjustable 100% Duty Cycle RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK |
| MAX1626ESA+T | 功能描述:DC/DC 開關控制器 5/3.3V or Adjustable 100% Duty Cycle RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK |
| MAX1626ESA-T | 功能描述:DC/DC 開關控制器 5/3.3V or Adjustable 100% Duty Cycle RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK |
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