MAX8934EET 查看數據表（PDF） - Maxim Integrated
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产品描述 (功能)
生产厂家
MAX8934EET
Maxim Integrated
MAX8934EET Datasheet PDF : 31 Pages
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Dual-Input Linear Chargers, Smart Power Selector
with Advanced Battery Temperature Monitoring
Typical Operating Characteristics (continued)
(MAX8934A, TA = +25NC, circuit of Figure 2, VDC = 6V, VBATT = 3.6V, thermistor Beta = 3964, unless otherwise noted. Negative bat-
tery current indicates charging.)
LDO OUTPUT VOLTAGE vs. LDO OUTPUT
CURRENT (USB DISCONNECTED)
3.35
VBATT = 4.0V
3.30
3.25
DC UNCONNECTED
3.20
VDC = 5.0V
3.15
3.10
3.05
3.00
2.95
0
25 50 75 100 125 150 175
LDO OUTPUT CURRENT (mA)
LDO OUTPUT VOLTAGE vs.
BATTERY VOLTAGE
3.5
3.0
2.5
VBATT FALLING
2.0
VBATT RISING
1.5
1.0
0.5
0
0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0
BATTERY VOLTAGE (V)
900
800
700
600
500
400
300
200
100
0
0.01
LDO NOISE DENSITY
vs. FREQUENCY
VBATT = 3.8V,
ILDO = 10mA
RESISTIVE LOAD
0.1 1 10 100 1000 10,000
FREQUENCY (kHz)
VBATT
LDO STARTUP WAVEFORMS
MAX8934A/B/C toc27
ILDO = 0
3.6V
2V/div
3.3V
2V/div
VLDO
IBATT
50mA/div
400Fs/div
ALWAYS-ON LDO POWER-SUPPLY
REJECTION RATIO vs. FREQUENCY
0
-5 VSYS = 3.6V
-10
ILDO = 10mA
RESISTIVE LOAD
-15
-20
-25
-30
-35
-40
-45
-50
0.1
1
10
100
FREQUENCY (kHz)
THM NORMAL TO THM COLD
(< T2) TRANSITION
MAX8934A/B/C toc31
VTHM
VBATT
IBATT
2.2V
3.6V
1A
500mA
500mV/div
2V/div
500mA/div
10ms/div
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