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参数资料
| 型号： | MAX1639ESE |
| 厂商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分类： | 稳压器 |
| 英文描述： | High-Speed Step-Down Controller with Synchronous Rectification for CPU Power |
| 中文描述： | SWITCHING CONTROLLER, 1200 kHz SWITCHING FREQ-MAX, PDSO16 |
| 封装： | SOIC-16 |
| 文件页数： | 5/13页 |
| 文件大小： | 108K |
| 代理商： | MAX1639ESE |
M
High-S peed S tep-Down Controller with
S ync hronous Rec tific ation for CPU Power
_______________________________________________________________________________________
5
______________________________________________________________Pin Desc ription
7
Analog Ground
AGND
6
Reference Output, 3.5V. Bypass REF to AGND with 0.1μF (min). Sources up to 100μA for external
loads. Force REF below 2V to turn off the controller.
REF
5
Analog Supply Input, 5V. Use an RC filter network, as shown in Figure 1.
V
CC
4
Current-Sense Amplifier’s Noninverting Input
CSH
3
Current-Sense Amplifier’s Inverting Input. Place the current-sense resistor very close to the controller IC,
and use a Kelvin connection.
CSL
2
Open-Drain Logic Output. PWROK is high when the voltage on FB is within +8% and -6% of its set-
point.
PWROK
8
Voltage-Feedback Input. The voltage at this input is regulated to 1.100V.
FB
9
Fast-Loop Compensation Capacitor Input. Connect a ceramic capacitor and resistor in series from
CC1 to AGND. See the section Compensating the Feedback Loop.
CC1
FUNCTION
NAME
1
Boost-Capacitor Bypass for High-Side MOSFET Gate Drive. Connect a 0.1μF capacitor and low-leak-
age Schottky diode as a bootstrapped charge-pump circuit to derive a 5V gate drive from V
DD
for DH.
BST
10
Slow-Loop Compensation Capacitor Input. Connect a ceramic capacitor from CC2 to AGND. See the
section Compensating the Feedback Loop.
CC2
11
Frequency-Select Input.
FREQ = V
CC
: 1MHz
FREQ = REF: 600kHz
FREQ = AGND: 300kHz
FREQ
12
Power Input for MOSFET Drivers, 5V. Bypass V
DD
to PGND within 0.2 in. (5mm) of the V
DD
pin using a
0.1μF capacitor and 4.7μF capacitor connected in parallel.
V
DD
13
Low-Side Synchronous Rectifier Gate-Drive Output. DL swings between PGND and V
DD
. See the
section BST High-Side Gate-Driver Supply and MOSFET Drivers.
DL
14
PGND
Power Ground
15
LX
Switching Node. Connect LX to the high-side MOSFET source and inductor.
16
DH
High-Side Main MOSFET Switch Gate-Drive Output. DH is a floating driver output that swings from LX
to BST, riding on the LX switching-node voltage. See the section BST High-Side Gate-Driver Supply
and MOSFET Drivers.
PIN
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1639ESE+ | 功能描述:DC/DC 开关控制器 High Speed 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 |
| MAX1639ESE+T | 功能描述:DC/DC 开关控制器 High Speed 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 |
| MAX1639ESE-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 |
| MAX1639EVKIT | 功能描述:DC/DC 开关控制器 Evaluation Kit the MAX1639 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 |
| MAX163BCNG | 功能描述:模数转换器 - ADC RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32 |
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