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| 型号： | MAX1644EAE+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 2/11页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK SYNC ADJ 2A 16SSOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 76 |
| 类型： | 降压（降压） |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | 1.1 V ~ 5.5 V |
| 输入电压： | 3 V ~ 5.5 V |
| PWM 型： | 电流模式，混合 |
| 频率 - 开关： | 最高 350kHz |
| 电流 - 输出： | 2A |
| 同步整流器： | 是 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-SSOP（0.209"，5.30mm 宽） |
| 包装： | 管件 |
| 供应商设备封装： | 16-SSOP |
| 产品目录页面： | 1410 (CN2011-ZH PDF) |
2A, Low-Voltage, Step-Down Regulator with
Synchronous Rectification and Internal Switches
ABSOLUTE MAXIMUM RATINGS
V CC , IN to GND ........................................................-0.3V to +6V
IN to V CC .............................................................................±0.3V
GND to PGND.....................................................................±0.3V
All Other Pins to GND.................................-0.3V to (V CC + 0.3V)
LX Current (Note 1)...........................................................±3.75A
REF Short Circuit to GND Duration ............................Continuous
Continuous Power Dissipation (T A = +70°C)
SSOP (derate 16.7mW/°C above +70°C;
part mounted on 1 in. 2 of 1oz. copper) ............................1.2W
Operating Temperature Range ...........................-40°C to +85°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) ................................ +300°C
ESD Protection .....................................................................±2kV
Note 1: LX has internal clamp diodes to PGND and IN. Applications that forward bias these diodes should take care not to exceed
the IC’s package power dissipation limits.
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(V IN = V CC = +3.3V, FBSEL = GND, T A = 0°C to +85°C, unless otherwise noted. Typical values are at T A = +25°C.)
PARAMETER
Input Voltage
SYMBOL
V IN , V CC
CONDITIONS
MIN
3.0
TYP
MAX
5.5
UNITS
V
V IN = V CC = 4V to 5.5V,
FBSEL = unconnected
3.300
3.333
3.366
Preset Output Voltage
V OUT
I LOAD = 0 to
2A,
V FB = V OUT
V IN = V CC = 3V to 5.5V,
FBSEL = V CC
2.500
2.525
2.550
V
V IN = V CC = 3V to 5.5V,
FBSEL = REF
1.089
1.100
1.111
Adjustable Output Voltage
Range
AC Load Regulation Error
DC Load Regulation Error
V IN = V CC = 3V to 5.5V,
I LOAD = 0, FBSEL = GND or REF
FBSEL = GND
FBSEL = REF, V CC , or unconnected
FBSEL = GND
FBSEL = REF, V CC , or unconnected
V REF
1
2
0.2
0.4
V IN
V
%
%
Dropout Voltage
V DO
V IN = V CC = 3V, I LOAD = 1A, FBSEL = V CC
200
mV
Reference Voltage
Reference Load Regulation
V REF
Δ V REF
I REF = -1μA to +10μA
1.089
1.100
0.5
1.111
1
V
mV
PMOS Switch
On-Resistance
NMOS Switch
On-Resistance
Current-Limit Threshold
R ON, P
R ON, N
I LIMIT
I LX = 0.5A
I LX = 0.5A
V IN = 4.5V
V IN = 3V
V IN = 4.5V
V IN = 3V
2.5
70
100
70
100
2.9
150
200
150
200
3.3
m Ω
m Ω
A
RMS LX Output Current
2.5
A
Idle Mode Current
Threshold
Switching Frequency
No-Load Supply Current
Shutdown Supply Current
I IM
f
I IN + I CC
I CC(SHDN)
(Note 2)
V FB = 1.2V
SHDN = GND
0.25
0.45
240
<1
0.65
350
360
3
A
kHz
μA
μA
PMOS Switch Off-Leakage
Current
Thermal Shutdown
Threshold
I IN
T SHDN
SHDN = GND
Hysteresis = 15°C
150
15
μA
°C
2
_______________________________________________________________________________________
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1644EAE/GH9 | 功能描述:直流/直流开关转换器 RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| MAX1644EAE/GH9-T | 功能描述:直流/直流开关转换器 RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| MAX1644EAE+ | 功能描述:直流/直流开关转换器 2A Step-Dow w/Synch Rectification RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| MAX1644EAE+T | 功能描述:直流/直流开关转换器 2A Step-Dow w/Synch Rectification RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| MAX1644EAE+TG116 | 制造商:Maxim Integrated Products 功能描述:2A, LOW-VOLTAGE, STEP-DOWN REGULATOR WITH SYNCHRONOUS RECTIF - Tape and Reel |
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