参数资料
型号: MAX8939EWV+T
厂商: Maxim Integrated Products
文件页数: 6/45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
ELECTRICAL CHARACTERISTICS (Note 3) (continued)
(V BATT = 3.7V, V CHG_IN = 5.0V, circuit of Figure 1, T A = -40 N C to +85 N C, unless otherwise noted. Typical values are at T A = +25 N C.)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
TOPOFF_TIME = 00b
30
Top-Off Timer
TOPOFF_TIME = 01b
TOPOFF_TIME = 10b
TOPOFF_TIME = 11b
60
120
Disable
min
Watchdog Timer
MAX8939
MAX8939A/MAX8939B
2.5
15
5
30
10
45
s
THERMAL LOOP
Thermal Limit Temperature
Junction temperature
when the charge current is
reduced, T J rising, default
value
+70 N C [00]
+85 N C [01]
+100 N C [10]
+115 N C [11]
+100
N C
OUT1 STEP-UP DC-DC CONVERTER
Input Voltage (V BATT )
Input Supply Current
2MHz switching, V OUT = 5V, no load
2.9
11
5.5
V
mA
OUT1 Voltage Accuracy
Maximum Output Current
500mA load
V BATT R 3.2V, V OUT1 = 5.0V
T A = +25 N C
T A = +85 N C
-3
-4
550
700
+3
+4
%
mA
nFET Current Limit
2.0
A
Line Regulation
Load Regulation
V BATT = 2.9V to 4.2V
0 to 500mA load
0.1
0.5
%/V
%/A
LX1 nFET On-Resistance
LX1 pFET On-Resistance
LX1 to PGND1     , I LX1 = 200mA
LX1 to OUT1, I LX1 = -200mA
0.1
0.15
0.2
0.3
I
I
LX1 Leakage
Switching Frequency
Maximum Duty Cycle
V LX1 = 5.5V
T A = +25 N C
T A = +85 N C
1.8
65
0.01
0.1
2
75
5
2.2
F A
MHz
%
Minimum Duty Cycle
8
%
COMP Discharge Resistance
During shutdown or UVLO
220
I
VIBRATOR
Programmable Output Voltage
OUTVIB
Output Current
1mA at V BATT = V INVIB = 5.5V, 150mA at V BATT =
V INVIB = 3.4V, default value
3
200
V
mA
Current Limit
Dropout Voltage
Line Regulation
Load Regulation
Power-Supply Rejection
D V INVIB / D V OUTVIB
Output Noise
Discharge Time Constant
V OUTVIB = 0V
I LOAD = 135mA, T A = +25 N C
3.4V P V BATT = V INVIB < 5.5V, I LOAD = 100mA
1mA < I LOAD < 200mA
f = 10Hz to 10kHz, I LOAD = 30mA
100Hz to 100kHz, I LOAD = 30mA
T OFF 90% to 5%, C = 1 F F
400
150
2.2
25
40
65
0.1
600
300
mA
mV
mV
mV
dB
F V RMS
ms
6
Maxim Integrated
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