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| 型号： | MAX1993ETG+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 2/36页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR BUCK PWM CM 24-TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 系列： | Quick-PWM™ |
| PWM 型： | 电流模式 |
| 输出数： | 1 |
| 频率 - 最大： | 600kHz |
| 占空比： | 100% |
| 电源电压： | 4.5 V ~ 5.5 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： | 24-WFQFN 裸露焊盘 |
| 包装： | 带卷 (TR) |
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Quick-PWM Step-Down Controllers with Inductor
Saturation Protection and Dynamic Output Voltages
ABSOLUTE MAXIMUM RATINGS (Note 1)
V+ to AGND............................................................-0.3V to +30V
V CC to AGND............................................................-0.3V to +6V
V DD to PGND............................................................-0.3V to +6V
PGOOD, ILIM, SKIP , SHDN to AGND ......................-0.3V to +6V
REFIN, FB, CSP to AGND.........................................-0.3V to +6V
GATE, OD to GND (MAX1993 only) .........................-0.3V to +6V
TON, OVP/UVP, LSAT to AGND .................-0.3V to (V CC + 0.3V)
REF, OUT to AGND ....................................-0.3V to (V CC + 0.3V)
FBLANK to GND (MAX1993 only) ..............-0.3V to (V CC + 0.3V)
DL to PGND................................................-0.3V to (V DD + 0.3V)
CSN to AGND............................................................-2V to +30V
DH to LX .....................................................-0.3V to (BST + 0.3V)
LX to AGND ...............................................................-2V to +30V
BST to LX..................................................................-0.3V to +6V
AGND to PGND (MAX1992 only) ..........................-0.3V to +0.3V
REF Short Circuit to AGND.........................................Continuous
Continuous Power Dissipation (T A = +70°C)
24-Pin 4mm x 4mm Thin QFN
(derated 20.8mW/°C above +70°C)...........................1667mW
Operating Temperature Range
MAX199_ETG ..................................................-40°C to +85°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
Note 1: For the MAX1993, AGND and PGND refer to a single pin designated GND.
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+ = 15V, V CC = V DD = SHDN = 5V, SKIP = GND, T A = 0°C to +85°C , unless otherwise noted. Typical values are at T A = +25°C.)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
PWM CONTROLLER
Input Voltage Range
V IN
V BIAS
Battery voltage, V+
V CC , V DD
MAX1992
FB = GND
2
4.5
2.475
2.5
28
5.5
2.525
V
Output Voltage Accuracy
(MAX1992 Fixed)
V OUT
V+ = 4.5V to 28V,
SKIP = V CC
(Note 2)
FB = V CC
1.782
1.8
1.818
V
Feedback Voltage Accuracy
(MAX1992 Adjustable)
V FB
MAX1992 V+ = 4.5V to 28V, SKIP = V CC
(Note 2)
0.693
0.7
0.707
V
Feedback Voltage Accuracy
(MAX1993)
V FB
MAX1993
V+ = 4.5V to 28V,
SKIP = V CC
(Note 2)
REFIN = 0.35 × REF
REFIN = REF
0.693
1.980
0.7
2
0.707
2.020
V
Load Regulation Error
Line Regulation Error
I LOAD = 0 to 3A, SKIP = V CC
V CC = 4.5V to 5.5V, V+ = 4.5V to 28V
0.1
0.25
%
%
FB Input Bias Current
Output Adjust Range
I FB
-0.1
0.7
+0.1
5.5
μA
V
OUT Input Resistance
R OUT
MAX1992
FB = GND
FB = V CC or adjustable
90
70
190
145
350
270
k Ω
MAX1993
400
800
1400
OUT Discharge Mode
On-Resistance
OUT Synchronous Rectifier
Discharge Mode Turn-On Level
R DISCHARGE
0.2
10
0.3
25
0.4
Ω
V
Soft-Start Ramp Time
t SS
Rising edge on SHDN to full current limit
1.7
ms
2
_______________________________________________________________________________________
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1993EVKIT | 制造商:Maxim Integrated Products 功能描述:EVALUATION KIT FOR THE MAX1992 MAX1993 - Bulk |
| MAX1994ETM | 功能描述:DC/DC 开关控制器 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 |
| MAX1994ETM+ | 功能描述:DC/DC 开关控制器 Integrated Circuits (ICs) 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 |
| MAX1994ETM+T | 功能描述:DC/DC 开关控制器 Integrated Circuits (ICs) 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 |
| MAX1994ETM-T | 功能描述:DC/DC 开关控制器 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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