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| 型号： | MAX1962EEP+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 9/29页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR BUCK PWM VM 20-QSOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 50 |
| PWM 型： | 电压模式 |
| 输出数： | 1 |
| 频率 - 最大： | 1.12MHz |
| 占空比： | 90% |
| 电源电压： | 2.35 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： | 20-SSOP（0.154"，3.90mm 宽） |
| 包装： | 管件 |
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2.35V to 5.5V, 0.5% Accurate, 1MHz PWM
Step-Down Controllers with Voltage Margining
Pin Description
PIN
NAME
FUNCTION
MAX1960 MAX1961 MAX1962
Clock Output. Connect to FSET/SYNC of a second converter to operate 180° out-of-
1
1
1
CLKOUT
phase. CLKOUT swings from V CC to GND. CLKOUT is low in shutdown (see the
Operating Frequency and Synchronization section) .
Frequency Set and Synchronization. Connect to GND for 500kHz operation,
2
2
2
FSET/SYNC
connect to V CC for 1MHz operation, or drive with clock signal to synchronize
(between 450kHz and 1200kHz).
3
—
3
—
—
3
ILIM
EN
Current Limit. Connect a resistor from ILIM to GND to set the current-sense
threshold voltage. Connect ILIM to V DD to select the default threshold of 75mV.
Enable. Drive high for normal operation. Drive low or connect to GND for shutdown mode.
Preset Output Voltage Select. Allows the output to be set to one of four preset
—
4
4
SEL
voltages (1.5V, 1.8V, 2.5V, and 3.3V). For the MAX1962, FB must be connected to
V DD if SEL is to be used (see the Setting the Output Voltage section) .
4
—
5
—
8
5
—
5
—
N.C.
OUT
CTL1
No Connection. Not internally connected.
Output. Connect to the output. Used to sense the output voltage for internal
feedback and current sense.
Control Pins. Controls voltage margining and shutdown. Connect both CTL1 and
CTL2 high for normal operation. Connect both CTL1 and CTL2 low for shutdown.
Connect CTL1 high and CTL2 low for +4% voltage margining. Connect CTL1 low
6
—
7
6
—
7
—
6
7
CTL2
CS
AV DD
and CTL2 high for -4% voltage margining. If voltage margining is not to be used,
connect CTL1 and CTL2 together and use to enable/shutdown the device.
Current-Sense Input. Connect to the junction of the current-sense resistor and the
inductor. The MAX1962 current-sense threshold is 50mV measured from CS to OUT.
Filtered Supply from V DD . Connect a 1μF bypass capacitor. AV DD is forced to V CC
in shutdown. Do not apply an external load to AV DD .
Feedback Input. The feedback threshold is 0.8V. Connect to the center of a resistive
8
—
8
FB
voltage-divider from the output to GND to set the output voltage to 0.8V or greater. On
the MAX1962, connect FB to V DD to select preset output voltages (see SEL).
9
10
11
9
10
11
9
10
11
COMP
REF
GND
Compensation Pin. COMP is forced to GND in shutdown, UVLO, or thermal fault.
Reference Output. V REF = 1.28V. Bypass with a 0.22μF capacitor to GND.
Analog Ground. Connect to the PC board analog ground plane. Connect the PC
board analog ground plane and power ground planes with a single connection.
Charge-Pump Output. Provides regulated 5V to power the IC and gate drivers.
12
12
12
V DD
Bypass with a 4.7μF ceramic capacitor for operating frequencies between 450kHz
and 950kHz. Bypass with a 2.2μF ceramic capacitor for 1MHz operation. V DD is
internally forced to V CC in shutdown. Do not apply an external load to V DD .
13
14
13
14
13
14
DL
PGND
Low-Side MOSFET Synchronous Rectifier Gate-Driver Output. DL is high in
shutdown.
Power Ground. Connect to the PC board power ground plane.
_______________________________________________________________________________________
9
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1962EEP+ | 功能描述:DC/DC 开关控制器 1MHz PWM Step-Down 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 |
| MAX1962EEP+T | 功能描述:DC/DC 开关控制器 1MHz PWM Step-Down 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 |
| MAX1962EEP-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 |
| MAX1963AETT120+T | 功能描述:低压差稳压器 - LDO Low Input Voltage 300mA LDO Regulators with RESET in SOT and TDFN RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20 |
| MAX1963AETT150+T | 功能描述:低压差稳压器 - LDO Low-Input-Voltage 300mA LDO Regulators with RESET in SOT and TDFN RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20 |
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