MAX1259MJE Maxim Integrated, MAX1259MJE Datasheet - Page 3

• Manufacturer Part Number: MAX1259MJE
• Description: Battery Management
• Manufacturer: Maxim Integrated
• Series: MAX1259r

Specifications of MAX1259MJE

• Output Voltage: 3 V
• Output Current: 0.1 mA (Max)
• Operating Supply Voltage: 4.5 V to 5.5 V
• Maximum Operating Temperature: + 125 C
• Minimum Operating Temperature: - 55 C
• Package / Case: CDIP N
• Mounting Style: Through Hole

CAPACITANCE
(All grades, T
AC ELECTRICAL CHARACTERISTICS
(V
Note 1: All voltages referenced to ground.
Note 2: Trip-point voltage for power-fail detect: V
Note 3: 50pF load capacity.
Note 4: Measured with pins 3, 11, 12, 13, and open.
Note 5: V
Note 6: V
Note 7: I
Note 8: Battery leakage is the internal energy consumed by the MAX1259.
Note 9: See the Typical Operating Characteristics BAT Switch Drop vs. Battery Voltage graph.
Note 10: Guaranteed by design. Not tested.
Input Capacitance
Output Capacitance
V
V
Power-Down to PF Low
PF High After Power-Up
RST Pulse Width
1, 4, 9, 10, 14
CC
CCI
CCI
12, 13
15, 16
= 4.0V to 5.5V, all grades, T
PIN
7, 8
Fall Time
Rise Time
11
2
3
5
6
CCO2
TP
BATTF
PARAMETER
PARAMETER
is the point at which PF is driven low.
A
may be limited by battery capacity.
= +25°C, unless otherwise noted.) (Note 10)
is the point at which BF is driven low.
NAME
V
V
GND
V
N.C.
BAT
RST
_______________________________________________________________________________________
BATT
BF
CCO
PF
CCI
No Connection. Make no connection to these pins.
Backup Battery Input
Battery-Fail Output. BF is high for V
backup battery is below 2V or V
Battery Output. During normal operation, the BAT output supplies up to 1mA of continuous battery
current. In shipping mode, the BAT output is high impedance.
Battery-Disconnect Input. The RST input is used to prevent battery discharge during shipping.
Pulsing the RST input disconnects the backup battery from the V
Ground
Power-Fail Output. PF is high for V
CMOS RAM is Powered from V
and connects V
+5V V
A
= +25°C, unless otherwise noted.)
CC
SYMBOL
SYMBOL
RST
C
t
Input
C
REC
t
OUT
t
t
PF
F
R
IN
PW
CCO
TP
to whichever is higher.
= 1.26 x V
CCO
BATT
CCI
CONDITIONS
CONDITIONS
CCI
CCI
. The battery switchover circuit compares V
falls below V
. For 5% operation: V
greater than 1.26 x V
at or above V
FUNCTION
TP
, BF will be driven low.
TP
and the backup battery greater than 2V. If the
Battery Manager
BATT
BATT
= 3.7V max.
(V
CCO
TP
MIN
MIN
300
50
1
0
), indicating a valid V
and BAT outputs.
Pin Description
TYP
TYP
10
5
5
CCI
to the V
MAX
MAX
100
10
10
CCI
BATT
voltage.
UNITS
UNITS
input,
pF
pF
µs
µs
µs
µs
ns
3