MCP73838T-FCI/MF Microchip Technology, MCP73838T-FCI/MF Datasheet - Page 13

• Manufacturer Part Number: MCP73838T-FCI/MF
• Description: IC LIION CHRGR USB/AC-IN 10DFN
• Manufacturer: Microchip Technology

Specifications of MCP73838T-FCI/MF

• Battery Type: Lithium-Ion (Li-Ion), Lithium-Polymer (Li-Pol)
• Function: Charge Management
• Voltage - Supply: 4.5 V ~ 6 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 10-DFN
• Input Voltage: 6V
• Battery Charge Voltage: 4.5V
• Charge Current Max: 1A
• Battery Ic Case Style: DFN
• No. Of Pins: 10
• No. Of Series Cells: 1
• Product: Charge Management
• Output Voltage: 4.2 V, 4.35 V, 4.4 V, 4.5 V
• Output Current: 1200 mA
• Operating Supply Voltage: 3.75 V to 6 V
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant
• Other names: MCP73838T-FCI/MFTR

3.0
The descriptions of the pins are listed in
TABLE 3-1:
3.1
A supply voltage of
adapter is recommended. When both the AC-Adapter
and the USB-Port supply voltages are present at same
time, the AC-Adapter dominates the regulated charge
current with the maximum value of 1A. Bypass to V
with a minimum of 4.7 µF is recommended.
3.2
A supply voltage of
recommended. When no supply voltage from V
available, the Li-Ion battery is charged directly from
USB-Port. Bypass to V
recommended.
3.3
STAT1 is an open-drain logic output for connection to a
LED for charge status indication. Alternatively, a pull-up
resistor can be applied for interfacing to a host micro-
controller.
3.4
STAT2 is an open-drain logic output for connection to a
LED for charge status indication. Alternatively, a pull-up
resistor can be applied for interfacing to a host
microcontroller.
© 2007 Microchip Technology Inc.
MSOP-10
10
—
1
2
3
4
5
6
7
8
8
9
Pin Number
PIN DESCRIPTION
AC-Adapter Supply Input (V
USB-Port Supply Input (V
Charge Status Output 1 (STAT1)
Charge Status Output 2 (STAT2)
DFN-10
PIN FUNCTION TABLES
V
V
EP
10
REG
1
2
3
4
5
6
7
8
8
9
REG
SS
+ 0.3V to 6V from USB-Port is
+ 0.3V to 6V from ac-dc wall-
with a minimum of 1 µF is
Symbol
THERM
PROG1
PROG2
STAT1
STAT2
V
V
V
V
V
PG
TE
USB
BAT
AC
SS
SS
Table
USB
I/O
I/O
I/O
I/O
—
—
O
O
O
I
I
I
I
AC
AC
3-1.
)
)
pin is
AC-Adapter Supply Input
USB-Port Supply Input
Charge Status Output 1 (Open-Drain)
Charge Status Output 2 (Open-Drain)
Battery Management 0V Reference
Current Regulation Setting With AC-Adapter; Device Charge
Control Enable; Precondition Set Point for AC control
Current Regulation Setting With USB-Port; Precondition Set Point
for USB control.
Available on MCP73837: Power-Good Status Output (Open-Drain)
Available on MCP73838: Timer Enable; Enables Safety Timer
(Active Low)
Thermistor Monitoring Input and Bias current; System Test (LDO)
Mode Input
Battery Positive Input and Output Connection
EP (Exposed Thermal Pad); There is an internal electrical
connection between the exposed thermal pad and V
must be connected to the same potential as the V
Printed Circuit Board (PCB).
SS
3.5
Connect to negative terminal of battery and input
supply.
3.6
Connect to the positive terminal of Li-Ion / Li-Polymer
batteries. Bypass to V
ensure loop stability when the battery is disconnected.
3.7
The AC-Adapter constant charge current is set by
placing a resistor from PROG1 to V
set point of precondition and termination when the AC-
Adapter is present.
PROG1 also functions as device charge control
enable. The MCP73837/8 is shut down when an
impedance value greater than 70 kΩ is applied to
PROG1. When PROG1 is floating, the MCP73837/8
enters stand-by mode.
Battery Management 0V Reference
(V
Battery Charge Control Output
(V
AC-Adapter Current Regulation
Set (PROG1)
SS
BAT
)
Function
)
MCP73837/8
SS
with a minimum of 1 µF to
SS
SS
DS22071A-page 13
SS
. PROG1 is the
pin on the
. The EP