参数资料
型号: MAX8939EWV+T
厂商: Maxim Integrated Products
文件页数: 16/45页
文件大小: 0K
描述: IC PWR MGMT HANDSETS 30WLP
标准包装: 2,500
应用: 充电泵,无线设备
输入电压: 2.9 V ~ 5.5 V
输出数: 7
工作温度: -40°C ~ 85°C
安装类型: *
封装/外壳: *
供应商设备封装: *
包装: *
MAX8939/MAX8939A/MAX8939B
System Power Management
for Mobile Handset
Table 1. Output Summary
SUPPLY
LDO1
LDO2
LDO3
LDO4
OUTPUT
RANGE
1.7V to 3.2V
in 100mV step
1.7V to 3.2V
in 100mV step
1.7V to 3.2V
in 100mV step
1.7V to 3.2V
in 100mV step
DEFAULT
STATE AT
POWER-UP
Off
Off
Off
Off
DEFAULT
VALUE (V)
2.9
1.8
2.8
2.8
VOLTAGE
TOLERANCE
(%)
Q 3.0
Q 3.0
Q 3.0
Q 3.0
OUTPUT
CURRENT
(mA)
400
200
200
100
DESCRIPTION
Low-noise LDO to supply power either to
the RF or analog section. LDO1 is controlled
from the I 2 C bus or the LDO1_EN input.
Low-noise LDO to supply power either to
the RF or analog section. LDO2 is controlled
from the I 2 C bus.
Low-noise LDO to supply power either to
the RF or analog section. LDO3 is controlled
from the I 2 C bus.
Low-noise LDO to supply power either to
the RF or analog section. LDO4 is controlled
from the I 2 C bus.
OUT1 3.5V to 5.0V
(STEP-UP) in 100mV step
Off
5
Q 3.0
700
The OUT1 step-up converter provides a 5V
power supply for an audio amplifier. The
output voltage is programmable through I 2 C.
OUT2
(LED)
OUTVIB
(Vibrator)
V BATT to 28V
1.3V, 2.5V,
3V, or INVIB
bypass
Off
Off
N/A
3
N/A
Q 3.0
60
200
The OUT2 step-up converter operates at
2MHz and provides a high-voltage source for
the keypad and backlight display drivers.
High-power vibrator driver with
programmable output voltage and speed
control in 70 steps through I 2 C. The vibrator
driver has active brake with stop.
One-cell Li+
A stand-alone constant-current, constant
850mA (max) through I C.
Battery
Charger
MAX8939:
3.6V, 4.15V,
4.20V, or 4.25V
MAX8939A/
MAX8939B:
3.50V, 3.85V,
N/A*
MAX8939:
3.6
MAX8939A/
MAX8939B:
3.5
Q 0.6
90 default
MAX8939: voltage (CC/CV), thermally regulated linear
1.3A (max) charger designed for charging a single-cell
MAX8939A/ lithium-ion (Li+) battery. The charger current
MAX8939B: and protection timer is programmable
2
4.05V, or 4.17V
Protected output SAFE_OUT can be used to
SAFE_OUT
4.9V
N/A*
4.9
Q 3.0
100 (max)
supply low-voltage-rated USB systems and
the precharge indicator. The output voltage
is a fixed 4.9V.
* Subject to valid voltage present at CHG_IN.
16
Maxim Integrated
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