参数资料
型号: MAX8671XETL+T
厂商: Maxim Integrated Products
文件页数: 17/44页
文件大小: 0K
描述: IC PMIC W/CHARGER 40-TQFN-EP
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 2,500
功能: 充电管理
电池化学: 锂离子(Li-Ion)、锂聚合物(Li-Pol)
电源电压: 4.1 V ~ 6.6 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 40-WFQFN 裸露焊盘
供应商设备封装: 40-TQFN-EP(5x5)
包装: 带卷 (TR)
PMIC with Integrated Charger and
Smart Power Selector for Handheld Devices
Typical Operating Characteristics (continued)
(Circuit of Figure 1, I VL = 0mA, T A = +25°C, unless otherwise noted.)
REG1 DROPOUT VOLTAGE
REG1 EFFICIENCY vs. LOAD CURRENT
REG1 LOAD REGULATION
vs. LOAD CURRENT
100
90
80
70
60
50
PWM = 0
V OUT1 = 2.8V
2.900
2.880
2.860
2.840
2.820
2.800
R FBH = 182k Ω
R FBL = 100k Ω
200
180
160
140
120
100
THE NOMINAL INDUCTOR DC RESISTANCE
IS 140m Ω . THE NOMINAL p-CHANNEL
RESISTANCE OF THE REGULATOR IS
200m Ω AT 2.8V AND 185m Ω AT 3.3V.
THE SLOPE OF THE LINE SHOWS
THAT THE TOTAL DROPOUT
RESISTANCE OF AN AVERAGE
PART, BOARD, INDUCTOR
40
30
20
10
0
PWM = 1
V OUT1 = 2.8V
V BATT = 4V
2.780
2.760
2.740
2.720
2.700
80
60
40
20
0
COMBINATION IS
330m Ω AT 3.3V
AND 354m Ω
AT 2.8V.
V OUT1 = 3.3V
V OUT1 = 2.8V
SYS IS 100mV BELOW THE
REG1 NOMINAL REGULATION
VOLTAGE.
1
10
100
1000
0
50
100
150
200
250
0
100
200
300
400
500
LOAD CURRENT (mA)
REG1 LIGHT-LOAD SWITCHING
OUTPUT CURRENT (mA)
REG1 LIGHT-LOAD SWITCHING
OUTPUT CURRENT (mA)
REG1 HEAVY-LOAD SWITCHING
WAVEFORMS (PWM = 0)
MAX8671X toc26
WAVEFORMS (PWM = 1)
MAX8671X toc27
WAVEFORMS
MAX8671X toc28
V OUT1
20mV/div
(AC-COUPLED)
V OUT1
10mV/div
V OUT1
10mV/div
(AC-COUPLED)
V LX1
2V/div
V LX1
2V/div
V LX1
2V/div
0
0
0
I LI
200mA/div
I LI
100mA/div
I LI
100mA/div
20mA LOAD
4 μ s/div
0
REG1 LINE TRANSIENT
MAX8671X toc29
5.3V
20mA LOAD
200ns/div
0
20mA LOAD
400ns/div
REG1 LOAD TRANSIENT
MAX8671X toc30
0
V SYS
3.3V
3.3V
2V/div
V OUT1
50mV/div
(AC-COUPLED)
250mA
V OUT1
20mV/div
I OUT1
25mA
25mA
100mA/div
25mA LOAD
100 μ s/div
20 μ s/div
______________________________________________________________________________________
17
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