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参数资料
| 型号： | MAX8719ETA+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 7/10页 |
| 文件大小： | 0K |
| 描述： | IC REG LINEAR LP HV 8-TDFN |
| 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： | 4 V ~ 28 V |
| 输出数： | 1 |
| 输出电压： | 1.24 V ~ 28 V |
| 工作温度： | 0°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-WDFN 裸露焊盘 |
| 供应商设备封装： | 8-TDFN-EP（3x3） |
| 包装： | 带卷 (TR) |
High-Voltage, Low-Power Linear Regulators for
Notebook Computers
Pin Description
PIN
MAX8718 MAX8719
NAME
FUNCTION
1
2
3
—
4
5
6
7
8
1
2
—
3
4
5
6
7
8
IN
GND
5/ 3
FB
V CC
PGOOD
SHDN
I.C.
OUT
Positive Supply Input. Connect to a +4V to +28V supply.
Ground
Preset Output-Voltage Select Input. Connect 5/ 3 to GND for 3.3V output, or to OUT for 5V output.
Feedback Input. Regulates to 1.24V nominally.
PGOOD Sense Input
Power-Good Output
Shutdown Control Input
Internal Connection. This pin is internally connected for test purposes; leave it unconnected
in the application.
100mA Regulator Output
IN
OUT
OUTPUT
3.3V
IN
OUT
OUTPUT
6V TO
28V
1 μ F
SHDN
V CC
100k ?
10 μ F
6V TO
28V
1 μ F
SHDN
V CC
100k ?
10 μ F
MAX8718
MAX8719
I.C.
PGOOD
PGOOD
I.C.
PGOOD
PGOOD
R1
5/3
FB
GND
GND
R2
Figure 1. Typical Operating Circuit of the MAX8718
Detailed Description
The MAX8718/MAX8719 low-quiescent-current linear
regulators are designed primarily for high-input-voltage
applications. The MAX8718 supplies a preselected
3.3V or 5.0V output for loads up to 100mA (Figure 1).
The MAX8719 provides an adjustable voltage from
1.24V to 28V (Figure 2). The maximum output current is
a function of the package’s maximum power dissipation
for a given temperature. A 5μA load is required to main-
tain output regulation.
The MAX8718’s output voltage is fed back through an
internal resistive voltage-divider connected to OUT. Set
the output voltage to either 5.0V or 3.3V with the 5/ 3
Figure 2. Typical Operating Circuit of the MAX8719
pin. Select the 5V output by connecting 5/ 3 to OUT, or
the 3.3V output by connecting 5/ 3 to GND.
The MAX8719’s output is adjustable with an external
resistive voltage-divider. The typical feedback thresh-
old is 1.24V (see the Setting the MAX8719 Output
Voltage section). See Figure 3 for the MAX8718/
MAX8719 Functional Diagram.
Shutdown
The device enters shutdown mode when SHDN is low.
In shutdown mode, the internal pnp power transistor,
control circuit, reference, and all biases turn off, reduc-
ing the supply current to below 3μA. Connect SHDN to
IN for automatic startup.
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| MAX871EUK+ | 制造商:Maxim Integrated Products 功能描述:CHG PUMP INV -5.5V TO -1.4V 25MA 5PIN SOT-23 - Rail/Tube |
| MAX871EUK+T | 功能描述:电荷泵 Switched-Capacitor Voltage Inverter RoHS:否 制造商:Maxim Integrated 功能:Inverting, Step Up 输出电压:- 1.5 V to - 5.5 V, 3 V to 11 V 输出电流:100 mA 电源电流:1 mA 最大工作温度:+ 70 C 封装 / 箱体:SOIC-8 Narrow 封装:Tube |
| MAX871EUK+TG002 | 功能描述:电荷泵 Switched-Capacitor Voltage Inverter RoHS:否 制造商:Maxim Integrated 功能:Inverting, Step Up 输出电压:- 1.5 V to - 5.5 V, 3 V to 11 V 输出电流:100 mA 电源电流:1 mA 最大工作温度:+ 70 C 封装 / 箱体:SOIC-8 Narrow 封装:Tube |
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