MAX1538 Datasheet, PDF (6/22 Pages) Maxim Integrated Products – Power-Source Selector for Dual-Battery Systems

Power-Source Selector for
Dual-Battery Systems
ELECTRICAL CHARACTERISTICS (continued)
(V_BATA = V_BATB = V_CHGIN = 16.8V, C_VDD = 1µF, V_MINVA = V_MINVB = 0.93V, V_EXTLD = V_ADPIN = 28V, V_CHRG = V_BATSEL = V_RELRN = 0,
C_ADPPWR = C_REVBLK = C_ADPBLK = C_DISBAT = C_DISA = C_DISB = C_CHGA = C_CHGB = 4.7nF, TA = -40°C to +85°C, unless otherwise noted.)
(Note 2)
PARAMETER
SYMBOL
CONDITIONS
MIN
MAX UNITS
BAT_ Pack Removal Detection
Threshold
V_{BAT_} falling
1.88
2.12
V
GATE DRIVERS (Note 1)
ADPPWR, REVBLK, ADPBLK,
V_SOURCE = 15V, V_PIN = 7.5V
18
DISBAT, DISA, DISB, CHGA,
CHGB Source Current (PMOS
mA
Turn-Off)
V_SOURCE = 15V, V_PIN = 13V
3
ADPPWR, REVBLK, ADPBLK,
V_SOURCE = 15V, V_PIN = 15V
20
DISBAT, DISA, DISB, CHGA,
CHGB Sink Current (PMOS
mA
Turn-On)
V_SOURCE = 15V, V_PIN = 9.5V
10
ADPPWR, REVBLK, ADPBLK,
DISBAT, DISA, DISB, CHGA,
CHGB Turn-On Clamp Voltage
(V_PIN to V_SOURCE)
V_SOURCE = 8V to 19V (ADPPWR, REVBLK,
and ADPBLK, V_SOURCE = 8V to 28V)
V_SOURCE = 4.75V to 8V
-11.7
-8.00
-6.5
V
-3.50
ADPPWR, REVBLK, ADPBLK,
DISBAT, DISA, DISB, CHGA,
CHGB Turn-On Time
ADPPWR, REVBLK, ADPBLK,
DISBAT, DISA, DISB, CHGA,
CHGB Turn-Off Time
STATE SELECTION INPUTS
CHRG, BATSEL, RELRN Input
Low Voltage
V_SOURCE = 15V, V_PIN = 13V to V_PIN = 9V
V_SOURCE = 15V, V_PIN = 9V to V_PIN = 13V
0.88
µs
0.88
µs
0.8
V
CHRG, BATSEL, RELRN Input
High Voltage
2.1
V
STATE OUTPUTS
OUT0, OUT1, OUT2 Sink Current
TRANSITION TIMES
V_{OUT_} = 0.4V
V_{OUT_} = 5.5V
1
mA
25
MINV_ Comparator Delay
t_MINV
V_BAT_ = 5.5V to V_BAT_ = 4.45V
11
µs
AIRDET and ACDET Comparator
Delay
t_ADP
Falling edge with -20mV overdrive
6
µs
Battery-Insertion Blanking Time
MOSFET Turn-On Delay
t_BBLANK
t_TRANS
12
31
ms
5
10
µs
Note 1: V_PIN refers to the voltage of the driver output. V_SOURCE refers to the power source for the driver. ADPPWR, REVBLK, ADP-
BLK, DISBAT, DISA, DISB, CHGA, and CHGB gate drivers correspond to sources at ADPIN, EXTLD, EXTLD, CHGIN, BATA,
BATB, CHGIN, and CHGIN, respectively.
Note 2: Guaranteed by design. Not production tested.
6 _______________________________________________________________________________________