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参数资料
| 型号： | MAX1624-MAX1625 |
| 厂商： | Maxim Integrated Products, Inc. |
| 英文描述： | High-Speed Step-Down Controllers with Synchronous Rectification for CPU Power |
| 中文描述： | 高速步下同步整流控制器的CPU电源 |
| 文件页数： | 8/24页 |
| 文件大小： | 223K |
| 代理商： | MAX1624-MAX1625 |
M
High-S peed S tep-Down Controllers with
S ync hronous Rec tific ation for CPU Power
8
_______________________________________________________________________________________
MAX1625
MAX1624
PIN
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.
DH
16
24
Switching Node. Connect LX to the high-side MOSFET source and inductor.
LX
15
23
Power Ground
PGND
14
22
DL
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.
13
21
V
DD
5V Power Input for MOSFET Drivers. 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.
12
20
PDRV
GlitchCatcher P-Channel MOSFET Driver Output. PDRV swings between V
DD
and PGND.
—
19
NDRV
GlitchCatcher N-Channel MOSFET Driver Output. NDRV swings between V
DD
and
PGND.
—
18
D4, D3
Digital Inputs for Programming the Output Voltage
—
16, 17
FREQ
Frequency-Programming Input. Attach a resistor within 0.2 in. (5mm) of FREQ to AGND to
set the switching frequency between 100kHz and 1MHz. The FREQ pin is normally 2V DC.
11
15
CC2
Slow-Loop Compensation Capacitor Input. Connect a ceramic capacitor from CC2 to
AGND. See the section Compensating the Feedback Loop.
10
14
BST
Boost-Capacitor Bypass for High-Side MOSFET Gate Drive. Connect a 0.1μF capacitor
and low-leakage Schottky diode as a bootstrapped charge-pump circuit to derive a 5V
gate drive from V
DD
for DH.
1
1
NAME
FUNCTION
______________________________________________________________Pin Desc ription
CC1
Fast-Loop Compensation Capacitor Input. Connect a ceramic capacitor and resistor in
series from CC1 to AGND. See the section Compensating the Feedback Loop.
9
13
FB
Voltage-Feedback Input.
MAX1624:
Connect FB to the CPU’s remote voltage-sense point. The voltage at this
input is regulated to a value determined by D0–D4.
MAX1625:
Connect a feedback resistor voltage divider close to FB from the output to
AGND. FB is regulated to 1.1V.
8
12
PWROK
Open-Drain Logic Output. PWROK is high when the voltage on FB is within +8% and -6%
of its setpoint.
2
2
CSL
Current-Sense Amplifier’s Inverting Input. Place the current-sense resistor very close to
the controller IC, and use a Kelvin connection. Use an RC filter network at CSL (Figure 1).
Current-Sense Amplifier’s Noninverting Input. Use an RC filter network at CSH (Figure 1).
Digital Inputs for Programming the Output Voltage. D0–D4 are logic inputs that set the
output to a voltage between 1.1V and 3.5V in 100mV increments.
3
3
CSH
D2, D1,
D0
4
4
—
5, 6, 7
LG
Loop Gain-Control Input. LG is a three-level input that is used to trade off loop gain vs.
AC load-regulation and load-transient response. Connect LG to V
CC
, REF, or AGND for
2%, 1%, or 0.5% AC load-regulation errors, respectively.
—
8
V
CC
Analog Supply Input, 5V. Use an RC filter network, as shown in Figure 1.
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.
Analog Ground
5
9
REF
6
10
AGND
7
11
相关PDF资料 |
PDF描述 |
|---|---|
| MAX1624EAG | High-Speed Step-Down Controllers with Synchronous Rectification for CPU Power |
| MAX1626ESA | 5V/3.3V or Adjustable, 100% Duty-Cycle, High-Efficiency, Step-Down DC-DC Controllers |
| MAX1627ESA | 5V/3.3V or Adjustable, 100% Duty-Cycle, High-Efficiency, Step-Down DC-DC Controllers |
| MAX1626-MAX1627 | 5V/3.3V or Adjustable, 100% Duty-Cycle, High-Efficiency, Step-Down DC-DC Controllers |
| MAX1630 | Multi-Output, Low-Noise Power-Supply Controllers for Notebook Computers |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1625ESE | 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 |
| MAX1625ESE+ | 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 |
| MAX1625ESE+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 |
| MAX1625ESE-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 |
| MAX1625EVKIT | 功能描述:电源管理IC开发工具 RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V |
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