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| 型号： | MAX8537EEI+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 2/23页 |
| 文件大小： | 0K |
| 描述： | IC CNTRLR BUCK DUAL 28-QSOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 50 |
| 应用： | 控制器，DDR |
| 输入电压： | 4.5 V ~ 23 V |
| 输出数： | 2 |
| 输出电压： | 0.8 V ~ 3.6 V |
| 工作温度： | 0°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 28-QSOP |
| 供应商设备封装： | 28-QSOP |
| 包装： | 管件 |
Dual-Synchronous Buck Controllers for Point-of-
Load, Tracking, and DDR Memory Power Supplies
ABSOLUTE MAXIMUM RATINGS
V+ to GND ..............................................................-0.3V to +25V
AVL, VL to GND........................................................-0.3V to +6V
PGND to GND .......................................................-0.3V to +0.3V
FB_, EN_, POK_ to GND...........................................-0.3V to +6V
REFIN, VTTR, FREQ, SS_, COMP_ to GND....-0.3V to (AVL + 0.3V)
BST_, ILIM_ to GND ...............................................-0.3V to +30V
DH1 to LX1 ...............................................-0.3V to (BST1 + 0.3V)
DH2 to LX2 ...............................................-0.3V to (BST2 + 0.3V)
LX_ to GND................................................................-2V to +25V
DL_ to PGND ................................................-0.3V to (VL + 0.3V)
Continuous Power Dissipation (T A = +70°C)
28-Pin QSOP (derate 10.8mW/°C above +70°C)........860mW
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) ..........................……+300°C
LX_ to BST_ ..............................................................-6V to +0.3V
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+ = 12V, EN_ = VL, BST_ = 6V, LX_ = 1V, VL load = 0mA, C VL = 10μF (ceramic), REFIN = 1.25V, PGND = AGND = FB_ = ILIM_ =
0V, C SS = 10nF, C VTTR = 1μF, R FREQ = 20k ? , DH_ = open, DL_ = open, POK_ = open, circuit of Figure 1, T A = 0°C to +85°C, unless
otherwise noted.)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
GENERAL
V+ Operating Range
V+/ VL Operating Range
V+ Operating Supply Current
V+ Standby Supply Current
VL regulator drops out below 5.5V (Note 1)
VL is externally generated (Note 1)
IL(VL) = 0, FB_ forced 50mV above threshold
IL(VL) = 0, BST_ = VL, EN = LX_ = FB_ = 0V
4.5
4.5
3.5
350
23.0
5.5
7
700
V
V
mA
μA
VL REGULATOR
Output Voltage
VL Undervoltage-Lockout Trip
Level
5.5V < V+ < 23V, 1mA < I LOAD < 70mA
Rising edge, hysteresis = 550mV (typ) (trip level is
typically 85% of VL)
4.75
4.18
5
4.3
5.25
4.42
V
V
Output Current
Thermal Shutdown
This is for gate current of DL_ /DH_ drivers, C(VL) =
1μF/10mA ceramic capacitor
Rising temperature, typical hysteresis = 10°C
+160
70
mA
°C
CURRENT-LIMIT THRESHOLD (all current limits are tested at V+ = VL = 4.5V and 5.5V)
ILIM Sink Current
ILIM_ = LX - 200mV, 1.8V < LX < 23V, BST = LX +5V
180
200
220
μA
SOFT-START
Soft-Start Source Current
Soft-Start Sink Current
SS_ = 100mV
SS_ = 0.8 or REFIN
-7
3
-5
5
-3
7
μA
μA
Soft-Start Full-Scale Voltage
FREQUENCY
0.8 or
REFIN
V
Low End of Range
Intermediate Range
High End of Range
R FREQ = 100k ? , V+ = VL = 5V
R FREQ = 20k ? , V+ = VL = 5V
R FREQ = 14.3k ? , V+ = VL = 5V
160
800
1120
200
1000
1400
240
1200
1680
kHz
kHz
kHz
R FREQ = 100k ?
95
Maximum Duty Cycle
R FREQ = 20k ?
R FREQ = 14.3k ?
80
72
%
2
_______________________________________________________________________________________
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX8537EEI+ | 功能描述:DC/DC 开关控制器 Dual-Synchronous Buck 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 |
| MAX8537EEI+T | 功能描述:DC/DC 开关控制器 Dual-Synchronous Buck 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 |
| MAX8537EEI-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 |
| MAX8537EVKIT | 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 |
| MAX8538EEI | 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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