MAX8601ETD-T Maxim Integrated Products, MAX8601ETD-T Datasheet - Page 6

• Manufacturer Part Number: MAX8601ETD-T
• Description: Battery Management Dual-Input 1-Cell Li+ Charger With Ovp
• Manufacturer: Maxim Integrated Products

Specifications of MAX8601ETD-T

• Product: Charge Management
• Battery Type: Li-Ion, Li-Polymer
• Operating Supply Voltage: 4.15 V to 7 V
• Supply Current: 750 uA
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Package / Case: TDFN-14
• Charge Safety Timers: Yes
• Mounting Style: SMD/SMT
• Temperature Monitoring: Yes

Single-/Dual-Input 1-Cell Li+ Chargers with
OVP Protection and Programmable Charge Timer
Figure 1. Charger State Diagram
6
MAX8600
12, 13
_______________________________________________________________________________________
14
—
—
—
PIN
MAX8601
12, 13
14
—
9
6
FAST-CHARGE TIMER HELD
CHG = PREVIOUS STATE
CHG = PREVIOUS STATE
POK = PREVIOUS STATE
POK = PREVIOUS STATE
THM OUT OF RANGE
PREQUAL TIMER HELD
THM OUT OF RANGE
I
I
BAT
BAT
NAME
USEL
USB
FLT
= 0A
= 0A
DC
EP
DC Input Supply. Connect DC to a 4.5V to 7V charging source. Bypass DC to GND with a 1µF
or larger capacitor. DC takes priority over USB when both are present (MAX8601). Both DC
inputs should be connected together externally.
Fault Status Output. FLT goes low when either the prequal timer or the fast-charge timers
expire and the battery voltage is not above the required threshold. Clear the fault by raising
EN or removing input power.
USB Input Source. Connect to a USB port. Bypass USB to GND with a 1µF or larger capacitor.
USB Charge-Select Input. Logic input that determines the maximum charge current drawn
from the USB input. I
Exposed Pad. Connect to the GND plane for optimum thermal dissipation.
R
R
R
R
THM
THM
THM
THM
R
R
R
R
THM
THM
THM
THM
> 3.97kΩ AND
> 3.97kΩ AND
< 3.97kΩ OR
< 3.97kΩ OR
< 28.7kΩ
> 28.7kΩ
< 28.7kΩ
> 28.7kΩ
AND VOLTAGE MODE
BAT
I
BAT
SET TIMER = 0s
SET TIMER = 0s
V
BAT
POK = HIGH, CHG = HIGH, FLT = HIGH
< 172.5/R
= 95mA when USEL = low, and I
< 2.82V
I
BAT(USB)
POK = LOW, CHG = HIGH
POK = LOW, CHG = HIGH
POK = LOW, CHG = HIGH
POK = LOW, CHG = LOW
I
BAT(DC)
SETI
I
BAT
FAST-CHARGE
PREQUAL
TOP-OFF
I
I
= 100mA / 500mA
= 150 / R
BAT
BAT
DONE
= 1500 / R
OFF
= 0A
= 0A
EN LOW AND
POWER-GOOD
SET TIMER = 0s
V
SET TIMER = 0s
I
AND VOLTAGE MODE
SET TIMER = 0s
TOP-OFF
TIMEOUT
BAT
SETI
BAT
ISET
< 112.5 / R
FUNCTION
> 3V
Pin Description (continued)
SETI
V
BAT
PREQUAL
TIMEOUT
V
V
V
EN HIGH
< 3V AND
IN
IN
IN
< 4.1V OR
< 7.5V OR
< V
AND FAST-CHARGE
I
BAT
BAT
BAT
OR
> 112.5 / R
TIMEOUT
= 475mA when USEL = high.
SET TIMER = 0s
V
ANY STATE
CHG = HIGH
SETI
FLT = LOW
BAT
FAULT
< 4.05V