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参数资料
| 型号： | MAX17004ETJ+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 13/36页 |
| 文件大小： | 0K |
| 描述： | IC PS CTRLR FOR NOTEBOOKS 32TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 应用： | 控制器，笔记本电脑电源系统 |
| 输入电压： | 6 V ~ 26 V |
| 输出数： | 4 |
| 输出电压： | 3.3V，5V，2 V ~ 5.5 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 32-WFQFN 裸露焊盘 |
| 供应商设备封装： | 32-TQFN-EP（5x5） |
| 包装： | 带卷 (TR) |
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High-Efficiency, Quad-Output, Main Power-
Supply Controllers for Notebook Computers
Pin Description
R DIS 5 ≥ ? R DSCHG 5 ( MIN )
PIN
1
2
3
4
5
6
7
8
9
10
11
12
13
14
NAME
ONA
DRVA
ILIM
SHDN
ON3
ON5
REF
GND
FSEL
SKIP
FB5
CSH5
CSL5
DSCHG5
FUNCTION
Auxiliary LDO Enable Input. When ONA is pulled low, OUTA is high impedance and the secondary feedback
control is disabled. When ONA is driven high, the controller enables the auxiliary LDO.
Auxiliary LDO Transistor Base Driver. Connect DRVA to the base of a pnp power transistor. Add a 680 Ω
pullup resistor between the base and emitter.
Peak Current-Limit Threshold Adjustment. The current-limit threshold defaults to 50mV if ILIM is pulled up to
LDO5. In adjustable mode, the current-limit threshold across CSH_ and CSL_ is precisely 1/10th the voltage
seen at ILIM over a 0.5V to 2.0V range. The logic threshold for switchover to the 50mV default value is
approximately V LDO5 - 1V.
Shutdown Control Input. The device enters its 8μA supply-current shutdown mode if V SHDN is less than the
SHDN input falling-edge trip level and does not restart until V SHDN is greater than the SHDN input rising-
edge trip level. Connect SHDN to V IN for automatic startup. SHDN can be connected to V IN through a
resistive voltage-divider to implement a programmable undervoltage lockout.
3.3V SMPS Enable Input. Driving ON3 high enables the 3.3V SMPS, while pulling ON3 low disables the 3.3V
SMPS. If ON3 is connected to REF, the 3.3V SMPS starts after the 5V SMPS reaches regulation (delayed
start). Drive ON3 below the clear fault level to reset the fault latch.
5V SMPS Enable Input. Driving ON5 high enables the 5V SMPS, while pulling ON5 low disables the 5V
SMPS. If ON5 is connected to REF, the 5V SMPS starts after the 3.3V SMPS reaches regulation (delayed
start). Drive ON5 below the clear fault level to reset the fault latch.
2.0V Reference Voltage Output. Bypass REF to analog ground with a 0.1μF or greater ceramic capacitor.
The reference sources up to 50μA for external loads. Loading REF degrades output-voltage accuracy
according to the REF load-regulation error. The reference shuts down when the system pulls SHDN low.
Analog Ground. Connect the exposed backside pad to GND.
Frequency Select Input. This three-level logic input sets the controllers’ switching frequency. Connect to
LDO5, REF, or GND to select the following typical switching frequencies:
LDO5 = 500kHz, REF = 300kHz, GND = 200kHz.
Pulse-Skipping Control Input. Connect to LDO5 for low-noise, forced-PWM operation. Connect to REF for
automatic, low-noise, pulse-skipping operation at light loads. Connect to GND for automatic, high-efficiency,
pulse-skipping operation at light loads. Startup is always in the low-noise, pulse-skipping mode (i.e., same
as SKIP = REF setting), regardless of the SKIP setting. The SKIP setting takes effect once the respective
SMPS is in regulation.
Feedback Input for the 5V SMPS. Connect to LDO5 for the preset 5V output. In adjustable mode, FB5
regulates to 2V.
Positive Current-Sense Input for the 5V SMPS. Connect to the positive terminal of the current-sense element.
Figure 7 describes two different current-sensing options—using accurate sense resistors or lossless inductor
DCR sensing.
Output-Sense and Negative Current-Sense Input for the 5V SMPS. When using the internal preset 5V
feedback-divider (FB5 = LDO5), the controller uses CSL5 to sense the output voltage. Connect to the
negative terminal of the current-sense element. CSL5 also serves as the bootstrap input for LDO5. For the
MAX17003, place a Schottky diode from CSL5 to GND to prevent CSL5 from going below -7V.
Open-Drain Discharge Input for the 5V SMPS. DSCHG5 is pulled low when ON5 is low, discharging the
SMPS5 output. DSCHG5 is also low under fault conditions.
Connect a resistor from DSCHG5 to the SMPS5 output. Limit the peak discharge current to less than 100mA:
V OUT 5
100 mA
where R DSCHG5(MIN) is 5 Ω , taken from the Electrical Characteristics .
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX17005AETP+ | 功能描述:电池管理 1.2MHz High-Perf 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 |
| MAX17005AETP+T | 功能描述:电池管理 1.2MHz High-Perf 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 |
| MAX17005BETP+ | 功能描述:电池管理 1.2MHz High-Perf 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 |
| MAX17005BETP+T | 功能描述:电池管理 1.2MHz High-Perf 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 |
| MAX17005DEVKIT+ | 功能描述:电源管理IC开发工具 Programmers, Development Systems 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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