MAX8900B データシートの表示（PDF） - Maxim Integrated
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MAX8900B
Maxim Integrated
MAX8900B Datasheet PDF : 35 Pages
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MAX8900A/MAX8900B/MAX8900C
1.2A Switch-Mode Li+ Chargers with ±22V Input
Rating and JEITA Battery Temperature Monitoring
ABSOLUTE MAXIMUM RATINGS
IN to PGND..............................................................-22V to +22V
INBP to PGND........................................... (VBAT - 0.3V) to +22V
IN to INBP...............................................................-30V to +1.2V
STAT1, STAT2 to GND...........................................-0.3V to +30V
BST to PGND..........................................................-0.3V to +36V
BST to LX...............................................................-0.3V to +6.0V
BST to PVL.............................................................-0.3V to +30V
PVL, BAT, CS to PGND.........................................-0.3V to +6.0V
AVL, STAT3, CEN, THM to GND...........................-0.3V to +6.0V
PVL to AVL............................................................-0.3V to +0.3V
CT to GND..................................................-0.3V to (AVL + 0.3V)
SETI, DNI to GND..................................... -0.3V to (VBAT + 0.3V)
PGND to GND.......................................................-0.3V to +0.3V
IN Continuous Current.................................................... 2.4ARMS
LX Continuous Current (Note 1)..................................... 1.6ARMS
CS Continuous Current................................................. 1.3ARMS
BAT Continuous Current................................................ 1.3ARMS
Continuous Power Dissipation (TA = +70NC)
30-Bump WLP (derate 20.4mW/NC above +70NC).....1616mW
Operating Temperature Range........................... -40NC to +85NC
Junction Temperature....................................... -40NC to +150NC
Storage Temperature Range............................. -65NC to +150NC
Soldering Temperture (reflow).........................................+260NC
Note 1: LX has an internal clamp diode to PGND and INBP. Applications that forward bias these diodes should take care not to
exceed the power dissipation limits of the device.
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(VIN = 6V, VBAT = 4V, RSETI = 2.87kI, RDNI = 3.57kI, VTHM = VAVL/2, circuit of Figure 1, TA = -40NC to +85NC, unless otherwise
noted. Typical values are at TA = +25NC.) (Note 2)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
GENERAL
Withstand voltage
-20
+20
V
MAX8900B
3.4
IN Input Voltage Range (Note 3)
VIN
Operating voltage MAX8900A/
MAX8900C
3.4
8.7
V
6.3
IN Undervoltage Threshold
VUVLO VIN falling, 400mV hysteresis (Note 4)
3.1
3.2
3.3
V
IN to BAT Shutdown Threshold
VIN2BAT
When charging stops, VIN falling, 200mV
hysteresis
0
15
30
mV
IN Overvoltage Threshold
(Note 3)
0.40V hysteresis (MAX8900B) 8.80 9.00 9.20
VOVLO VIN rising 0.26V hysteresis (MAX8900A/
MAX8900C)
6.35
6.50
6.65
V
Charger enabled, no switching
1
2
IN Supply Current
LX High-Side Resistance
LX Low-Side Resistance
LX Leakage Current
BST Leakage Current
Current-Sense Resistor
IIN
RHS
RLS
RSNS
Charger enabled, f = 3.25MHz, VIN = 6V
Charger disabled, CEN = high
LX = GND or IN
VBST - VLX = 6V
VBAT = 2.6V
TA = +25NC
TA = +85NC
TA = +25NC
TA = +85NC
20
mA
0.04 0.2
0.10
I
0.15
I
0.01
10
FA
0.1
0.01
10
FA
0.1
0.045
I
IN to BAT Dropout Resistance
Switching Frequency
RIN2BAT
fSW
Calculation estimates a 40mI inductor
resistance (RL), RIN2BAT = RIN2INBP + RHS
+ RL + RSNS
VBAT = 2.6V
0.3
3.25
I
MHz
4
Maxim Integrated
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