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| 型号： | MAX8764ETP+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 9/23页 |
| 文件大小： | 0K |
| 描述： | IC CNTRL STP DWN HS 20-TQFN |
| 标准包装： | 60 |
| 应用： | 控制器，笔记本电脑电源系统 |
| 输入电压： | 2 V ~ 28 V |
| 输出数： | 1 |
| 输出电压： | 1.8V，2.5V，1 V ~ 5.5 V |
| 工作温度： | 0°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 20-WQFN 裸露焊盘 |
| 供应商设备封装： | 20-TQFN-EP（5x5） |
| 包装： | 管件 |
High-Speed, Step-Down Controller with
Accurate Current Limit for Notebook Computers
Pin Description (continued)
PIN
QSOP
14
THIN
QFN
11
NAME
V CC
FUNCTION
Analog Supply Input. Connect to the system supply voltage, 4.5V to 5.5V, with a series 20 ? resistor.
Bypass to GND with a 1μF (min) ceramic capacitor.
On-Time Selection-Control Input. This four-level logic input sets the nominal DH on-time. Connect to
15
12
TON
GND, REF, V CC , or leave TON unconnected to select the following nominal switching frequencies:
GND = 600kHz, REF = 450kHz, floating = 300kHz, and V CC = 200kHz.
16
17
18
19
20
13
14
15
16
17
V+
SKIP
BST
LX
DH
Battery-Voltage Sense Connection. Connect to input power source. V+ is used only to set the PWM
one-shot timing.
Pulse-Skipping Control Input. Connect to V CC for low-noise, forced-PWM mode. Connect to GND to
enable pulse-skipping operation.
Boost Flying-Capacitor Connection. Connect to an external capacitor and diode according to the
Standard Application Circuit (Figure 1). See the MOSFET Gate Drivers (DH, DL) section.
External Inductor Connection. Connect LX to the switched side of the inductor. LX serves as the
lower supply rail for the DH high-side gate driver.
High-Side Gate-Driver Output. Swings from LX to BST.
Table 1. Component Selection for
Table 2. Component Suppliers
Standard Applications
SUPPLIER
USA PHONE
FACTORY FAX
COMPONENT
C1 Input Capacitor
C2 Output Capacitor
D1 Schottky
L1 Inductor
2.5V AT 4A
10μF, 25V
Taiyo Yuden TMK432BJ106KM or
TDK C4532X5R1E106M
330μF, 6V
Kemet T510X477108M006AS or
Sanyo 6TPB330M
Nihon EP10QY03
4.7μH
Coilcraft DO33116P-682 or
Coilcraft
Dale-Vishay
Fairchild
IRC
Kemet
NIEC (Nihon)
Sanyo
Sumida
Taiyo Yuden
TDK
847-639-6400
203-452-5664
408-822-2181
800-752-8708
408-986-0424
805-867-2555*
619-661-6835
847-956-0666
408-573-4150
847-390-4461
1-847-639-1469
1-203-452-5670
1-408-721-1635
1-828-264-7204
1-408-986-1442
81-3-3494-7414
81-7-2070-1174
81-3-3607-5144
1-408-573-4159
1-847-390-4405
Sumida CDRH124-4R7MC
*Distributor
Q1 High-Side MOSFET
Q2 Low-Side MOSFET
R SENSE
Fairchild Semiconductor
1/2 FDS6982A
Fairchild Semiconductor
1/2 FDS6982A
0.015 ? ± 1%, 0.5W resistor
IRC LR2010-01-R015F or
Dale WSL-2010-R015F
Standard Application Circuit
The standard application circuit (Figure 1) generates a
2.5V rail for general-purpose use in a notebook computer.
See Table 1 for component selections. Table 2 lists com-
ponent manufacturers.
_______________________________________________________________________________________
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX8764ETP+ | 功能描述:电流型 PWM 控制器 High-Speed Step Down Controller RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14 |
| MAX8764ETP+T | 功能描述:电流型 PWM 控制器 High-Speed Step Down Controller RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14 |
| MAX8764ETP-T | 功能描述:电流型 PWM 控制器 RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14 |
| MAX8765AETI+ | 功能描述:电池管理 Multichemistry Battery Charger RoHS:否 制造商:Texas Instruments 电池类型:Li-Ion 输出电压:5 V 输出电流:4.5 A 工作电源电压:3.9 V to 17 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:VQFN-24 封装:Reel |
| MAX8765AETI+T | 功能描述:电池管理 Multichemistry Battery Charger RoHS:否 制造商:Texas Instruments 电池类型:Li-Ion 输出电压:5 V 输出电流:4.5 A 工作电源电压:3.9 V to 17 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:VQFN-24 封装:Reel |
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