MAX1501ZETE+ Maxim Integrated Products, MAX1501ZETE+ Datasheet - Page 14

• Manufacturer Part Number: MAX1501ZETE+
• Description: IC BATTERY CHARGER 16-TQFN
• Manufacturer: Maxim Integrated Products

Specifications of MAX1501ZETE+

• Function: Charge Management
• Battery Type: Li-Ion, NiCd, NiMH
• Voltage - Supply: 4.5 V ~ 13 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 16-WQFN Exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Highly Integrated, Linear Battery Charger with
Thermal Regulation for Portable Applications
Figure 7. Stand-Alone 3-Cell NiMH or NiCd Battery Charger
Figure 7 shows the MAX1501 as a stand-alone
NiMH/NiCd battery charger. Connecting SELV to GND
sets the charge termination voltage to 4.5V.
Figure 8 shows the MAX1501 as a µP-based
NiMH/NiCd battery charger. Connecting SELV to VL
sets the charge regulation voltage at 4.95V. Connect a
100kΩ pullup resistor from ACOK to the logic supply
voltage of the µP. The logic supply voltage must be
less than 5.5V.
Figure 9. µP-Based Single Li+/3-Cell NiMH/NiCd Battery
Charger
14
ADAPTER
ADAPTER
AC
AC
______________________________________________________________________________________
V
µP
I/O
1µF
1µF
4.75V TO 6.5V
4.75V TO 6.5V
100k Ω
2.8kΩ
2.8kΩ
IN
INP
GLED
RLED
ACOK
CHGEN
MODE
SETI
MAX1501/MAX1501Z
IN
INP
GLED
RLED
TMAX/I.C.
SETI
MAX1501/MAX1501Z
CHGEN
GND
GND
TMAX/I.C.
GND
GND
FULLI
TEMP
BATT
SELV
MODE
TEMP
ACOK
FULLI
BATT
SELV
VL
VL
4.5V 3-CELL NiMH/NiCd
4.1V 1-CELL Li+ OR
10µF
10µF
4.5V 3-CELL NiMH
OR NiCd
Figure 9 shows the MAX1501 as a µP-based single Li+ or
3-cell NiMH/NiCd charger. The states of MODE and
CHGEN set the operating mode of the MAX1501 (Table 1).
Connect a 100kΩ pullup resistor from ACOK to the logic
supply voltage of the µP. The logic supply voltage must be
less than 5.5V.
Figure 10 shows the MAX1501 as an accurate current-
limited low-dropout linear regulator with input overvolt-
age protection (no-battery mode). The output voltage
regulates to 4V, regardless of the state of SELV.
Connect MODE to VL to enable the linear regulator.
Connect MODE to GND to put the device into shut-
down. R
Figure 8. µP-Based NiMH or NiCd Battery Charge
Figure 10. Input Overvoltage-Protected and Current-Limited
Low-Dropout Linear Regulator
ADAPTER
AC
CURRENT-LIMIT
V
UP TO 1.4A
µP
I/O
ADJUST
SETI
1µF
4.5V TO 6.5V
1µF
sets the maximum output current.
5.25V TO 6.5V
R
PULLUP
2.8kΩ
IN
INP
FULLI
TEMP
TMAX/I.C.
SETI
MAX1501/MAX1501Z
IN
INP
GLED
RLED
ACOK
CHGEN
SETI
MAX1501/MAX1501Z
GND
GND
TMAX/I.C.
GND
CHGEN
MODE
ACOK
GLED
GND
RLED
BATT
SELV
MODE
TEMP
FULLI
BATT
SELV
VL
VL
4V
OFF
10µF
10µF
3-CELL NiMH
ON
OR NiCd
4.95V