MAX6841HUKD4+T Maxim Integrated, MAX6841HUKD4+T Datasheet - Page 6

• Manufacturer Part Number: MAX6841HUKD4+T
• Description: Supervisory Circuits
• Manufacturer: Maxim Integrated
• Series: MAX6841, MAX6842, MAX6843, MAX6844, MAX6845r

Specifications of MAX6841HUKD4+T

• Number Of Voltages Monitored: 1
• Monitored Voltage: 0.9 V to 1.5 V
• Undervoltage Threshold: 1.275 V
• Overvoltage Threshold: 1.35 V
• Output Type: Active High, Active Low, Push-Pull
• Manual Reset: Resettable
• Watchdog: No Watchdog
• Battery Backup Switching: No Backup
• Power-up Reset Delay (typ): 2240 ms
• Supply Voltage - Max: 1.8 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: SOT-23
• Chip Enable Signals: No
• Maximum Power Dissipation: 571 mW
• Minimum Operating Temperature: - 40 C
• Power Fail Detection: No
• Supply Current (typ): 8.1 uA
• Supply Voltage - Min: 0.75 V

Advanced Li+ Battery-Pack Protectors
(T
6
A
DISCHARGE-CURRENT FAULT TIMING
= +25°C, unless otherwise noted.)
_______________________________________________________________________________________
PIN
10
11
12
13
14
15
16
1
2
3
4
5
6
7
8
9
1ms/div
NAME
SHDN
CGO
DSO
PKN
TKO
SRC
B4P
V
B3P
B2P
B1P
CTL
IC3
IC2
IC1
BN
CC
MAX1894 toc10
Cell 4 Positive Connection. Short B4P to B3P for MAX1924V.
Supply Input. Connect this pin to the top of the battery pack through a diode and a capacitor
(see the Typical Application Circuit).
Cell 3 Positive Connection
Internal Connection. Float this pin.
Cell 2 Positive Connection
Internal Connection. Float this pin.
Cell 1 Positive Connection
Internal Connection. Float this pin.
Battery Negative. Connection for the cell 1 negative terminal and the top of the current-sense
resistor R
Pack Negative. The sense resistor (R
Control Input. Drive CTL low for normal operation. Drive CTL high to turn off the three external
protection MOSFETs.
Shutdown. Drive SHDN low for normal operation. Drive SHDN high to put the device into shutdown
if no charger is present.
Trickle-Charge Driver Output. TKO drives the gate of an external P-channel trickle-charge MOSFET
low (on) in normal operation.
Fast-Charge Driver Output. CGO drives the gate of an external P-channel fast-charge MOSFET low
(on) in normal operation.
Discharge Driver Output. DSO drives the gate of an external P-channel discharge control MOSFET
low (on) in normal operation.
Common Source Connection for MOSFETs. SRC provides the bias for gate drivers DSO, TKO,
and CGO.
V
100mV/div
0
0
DSO
5V/div
PKN
- V
SENSE
BN
. BN is also chip ground.
Typical Operating Characteristics (continued)
CHARGE-CURRENT FAULT TIMING
1ms/div
SENSE
MAX1894 toc11
) is connected between BN and PKN.
FUNCTION
0
V
100mV/div
0
CGO
5V/div
PKN
- V
BN
PACK-SHORT CURRENT FAULT TIMING
Pin Description
100µs/div
MAX1894 toc12
V
200mV/div
0
0
DSO
5V/div
PKN
- V
BN