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参数资料
| 型号： | MAX1798EGP+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 10/19页 |
| 文件大小： | 0K |
| 描述： | IC POWER SUPPLY CDMA 20-QFN |
| 标准包装： | 2,500 |
| 应用： | 手机，CDMA 手持话机 |
| 电流 - 电源： | 367µA |
| 电源电压： | 2.5 V ~ 5.5 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 20-QFN 裸露焊盘 |
| 供应商设备封装： | 28-QFN/MLP 裸露焊盘（5x5） |
| 包装： | 带卷 (TR) |
CDMA Cellular/PCS System
Power Supplies
Pin Description
PIN
TSSOP
1
2
3
4
5
6
7
QFN
19
20
1
2
3
4
5
NAME
CS (AS)
SCLK
(SCK)
DIN
(SDA)
ONO
GND
BP
PGND
FUNCTION
Chip-Select Input for SPI (MAX1798/MAX1798A). Address Select Input for I 2 C (MAX1799/
MAX1799A).
Clock Input for Serial Interface. Data is read on the rising edge of the clock. SCLK for
MAX1798/MAX1798A. SCK for MAX1799/MAX1799A.
Data Input for Serial Interface. Data is read on the rising edge of the clock. DIN for
MAX1798/MAX1798A. SDA for MAX1799/MAX1799A.
On Output. Indicates the state of ON . After initial power-up, the logic level of this pin follows that
of ON . Used to signal the microcontroller (μC) for an OFF request (allows push-on/push-off).
Ground
1.25V Reference Bypass. Connect a 0.01μF bypass capacitor to GND for reduced noise.
Do not load this pin .
Power Ground
Reset Output. Holds the μC system reset line low during initial startup and whenever OUT1 falls
8
6
RSO
out of regulation. RSO has a 140ms (min) timeout period and is an open-drain output with an
internal 14k ? pullup to OUT1. The RSO line maintains a valid low output level for IN1 as low as
1V.
9
10
7
8
DR1
DR2
2 ? Open-Drain Driver Output 1. Maximum sink current is 150mA (100mA RMS ). Can drive up to
10 LEDs for backlight or a vibrator motor.
2 ? Open-Drain Driver Output 2. Maximum sink current is 150mA (100mA RMS ). Can drive up to
10 LEDs for backlight or a vibrator motor.
OFF Input. A low level to this pin when ON is high turns off the IC once the watchdog timer has
11
9
OFF
timed out. A high-level input keeps the chip on. There is an internal 155k ? pulldown resistor at
this input.
12
13
14
15
16
17
18
19
20
—
10
11
12
13
14
15
16
17
18
—
OUT5
IN4/5
OUT4
OUT1
IN1
OUT3
IN2/3
OUT2
ON
EP
Output 5, Output of Linear Regulator 5; 150mA (max) Output Current. Connect a 2.2μF ceramic
bypass capacitor to PGND.
Supply Inputs 4 and 5. Voltage supply for linear regulators 4 and 5.
Output 4, Output of Linear Regulator 4; 150mA (max) Output Current. Connect a 2.2μF ceramic
bypass capacitor to PGND.
Output 1, Output of Linear Regulator 1; 300mA (max) Output Current. Connect a 4.7μF ceramic
bypass capacitor to PGND.
Supply Input 1. Voltage supply for linear regulator 1 and serial interface.
Output 3, Output of Linear Regulator 3; 150mA (max) Output Current. Connect a 2.2μF ceramic
bypass capacitor to PGND.
Supply Inputs 2 and 3. Voltage supply for linear regulators 2 and 3.
Output 2, Output of Linear Regulator 2; 150mA (max) Output Current. Connect a 2.2μF ceramic
bypass capacitor to PGND
ON Input. An active-low turns on the device, enabling LDO1, RESET, the ON/OFF logic, and the
serial interface.
Exposed Pad. Connect the exposed pad to a ground plane to provide heat sinking.
10
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1798EUP | 功能描述:PMIC 解决方案 CDMA Cellular/PCS System Power Supply RoHS:否 制造商:Texas Instruments 安装风格:SMD/SMT 封装 / 箱体:QFN-24 封装:Reel |
| MAX1798EUP+ | 功能描述:低压差稳压器 - LDO RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20 |
| MAX1798EUP-T | 功能描述:PMIC 解决方案 CDMA Cellular/PCS System Power Supply RoHS:否 制造商:Texas Instruments 安装风格:SMD/SMT 封装 / 箱体:QFN-24 封装:Reel |
| MAX1799AEGP | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| MAX1799AEUP | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
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