MAX1551-MAX1555 Datasheet, PDF (3/8 Pages) Maxim Integrated Products – SOT23 Dual-Input USB/AC Adapter 1-Cell Li+Battery Chargers

SOT23 Dual-Input USB/AC Adapter 1-Cell Li+
Battery Chargers
ELECTRICAL CHARACTERISTICS
(V_DC = 5V, V_USB = 0, I_BAT = 0, C_BAT = 1µF, T_A = -40°C to +85°C, unless otherwise noted.) (Note 2)
PARAMETER
DC
DC Voltage Range
DC to BAT Voltage Range
(Note 1)
CONDITIONS
MIN
MAX UNITS
3.7
7.0
V
0.1
6.0
V
DC Undervoltage Lockout
Threshold
Input rising, 430mV hysteresis, V_BAT = 3V (Note 1)
DC Supply Current
DC to BAT On-Resistance
V_DC = 3.7V, V_BAT = 3.6V
DC to BAT Dropout Voltage
When charging stops, V_BAT = 4V, DC falling, 200mV
hysteresis
USB
USB Voltage Range
(Note 1)
USB Undervoltage Lockout
Threshold
Input rising, 430mV hysteresis, V_DC = 0, V_BAT = 3V
(Note 1)
USB Supply Current
USB to BAT On-Resistance
V_USB = 5V, V_DC = 0
V_USB = 3.7V, V_BAT = 3.6V, V_DC = 0
USB to BAT Dropout Voltage
When charging stops, V_BAT = 4V, USB falling, 200mV
hysteresis, V_DC = 0
BAT
BAT Regulation Voltage
DC Charging Current
USB Charging Current
BAT Prequal Threshold
Prequalification Charging Current
BAT Leakage Current
POK, CHG
V_DC or V_USB = 5V
V_BAT = 3.3V, V_USB = 0, V_DC = 5V
V_BAT = 3.3V, V_DC = 0, V_USB = 5V
V_BAT rising, 100mV hysteresis
V_BAT = 2.8V
V_DC = V_USB = 0, V_BAT = 4.2V
CHG Threshold
CHG, POK Logic-Low Output
CHG, POK Leakage Current
Charge current where CHG goes high,
I_BAT falling, 50mA hysteresis
I_CHG, I_POK = 10mA
V_CHG, V_POK = 6V, T_A = +25°C
3.75
30
3.7
3.75
30
4.141
220
80
2.9
20
25
4.15
V
3
mA
2
Ω
95
mV
6.0
V
4.15
V
3
mA
4
Ω
95
mV
4.259
V
340
mA
100
mA
3.1
V
80
mA
5
µA
100
mA
300
mV
1
µA
Note 1: The input undervoltage lockout has 430mV of hysteresis. The charger turns on when an input rises to 3.95V (typ), and turns
off when it falls below 3.52V.
Note 2: Specifications to -40°C are guaranteed by design, not production tested.
_______________________________________________________________________________________ 3