MCP73837T-NVI/MF Microchip Technology, MCP73837T-NVI/MF Datasheet

IC LIION CHRGR USB/AC-IN 10DFN

MCP73837T-NVI/MF

Manufacturer Part Number
MCP73837T-NVI/MF
Description
IC LIION CHRGR USB/AC-IN 10DFN
Manufacturer
Microchip Technology
Datasheet

Specifications of MCP73837T-NVI/MF

Battery Type
Lithium-Ion (Li-Ion), Lithium-Polymer (Li-Pol)
Operating Temperature
-40°C ~ 85°C
Function
Charge Management
Voltage - Supply
4.5 V ~ 6 V
Mounting Type
Surface Mount
Package / Case
10-DFN
Input Voltage
6V
Battery Charge Voltage
4.5V
Charge Current Max
1000mA
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
Features
• High Accuracy Preset Voltage Regulation: + 0.5%
• Available Voltage Regulation Options:
• Complete Linear Charge Management Controller:
• Constant Current (CC) / Constant Voltage (CV)
• Selectable USB-Port Charge Current:
• Programmable AC-Adapter Charge Current:
• Two Charge Status Outputs
• Power-Good Monitor: MCP73837
• Timer Enable: MCP73838
• Automatic Recharge:
• Automatic End-of-Charge Control:
• Preconditioning of Deeply Depleted Cells - can be
• Battery Cell Temperature Monitor
• UVLO (Undervoltage Lockout)
• Automatic Power-Down when Input Power is
• Low-Dropout (LDO) Linear Regulator Mode
• Numerous Selectable Options Available for a
• Temperature Range: -40°C to 85°C
• Packaging:
© 2007 Microchip Technology Inc.
Advanced Stand-Alone Li-Ion / Li-Polymer Battery Charge
- 4.20V, 4.35V, 4.4V, or 4.5V
- Autonomous Power Source Selection
- Integrated Pass Transistors
- Integrated Current Sense
- Integrated Reverse Discharge Protection
Operation with Thermal Regulation
- Low: 1 Unit Load / High: 5 Unit Loads
- 15 mA - 1000 mA
- Selectable Voltage Threshold
- Selectable Charge Termination Current Ratio
- Selectable Safety Timer Period
disabled
Removed
Variety of Applications:
- Refer to Section 1.0 “Electrical
- Refer to the “Product Identification
- 10-Lead 3 mm x 3 mm DFN
- 10-Lead MSOP*
Management Controller with Autonomous AC-Adapter or
Characteristics” for Selectable Options”
System” for Standard Options
* Consult Factory for MSOP Package
Availability.
USB-Port Source Selection
Applications
• Smart Phones and Personal Data Assistants
• Portable Media Players(PMP)
• Ultra Mobile Devices(UMD)
• Digital Cameras
• MP3 Players
• Bluetooth Headsets
• Handheld Medical Devices
• AC/USB Dual Source Li-Ion Battery Chargers
Description
The MCP73837 and MCP73838 devices are fully
integrated linear Li-Ion / Li-Polymer battery chargers
with autonomous power source selection. Along with its
small physical size, the low number of external
components required makes the MCP73837/8 ideally
suitable for portable applications.
The MCP73837/8 automatically selects the USB-Port
or AC-Adapter as the power source for the system. For
the USB-Port powered systems, the MCP73837/8
specifically adheres to the current limits governed by
the USB specification. The host microcontroller can
select from two preset maximum charge current rates
of 100 mA (low power USB-port) or 500 mA (high
power USB-port). With an AC-Adapter providing power
to the system, an external resistor sets the magnitude
of the system or charge current up to a maximum of 1A.
The MCP73837/8 employs a constant current /
constant voltage charge algorithm with selectable
preconditioning and charge termination. The constant
voltage regulation is fixed with four available options:
4.20V, 4.35V, 4.40V, or 4.50V, to accommodated the
new emerging battery charging requirements. The
MCP73837/8 limits the charge current based on die
temperature during high power or high ambient
conditions. This thermal regulation optimizes the
charge cycle time while maintaining the device
reliability.
The MCP73837/8 are fully specified over the ambient
temperature range of -40°C to +85°C.
The MCP73837/8 devices are available in a 10-Lead,
3 mm x 3 mm, DFN package or in a 10-Lead MSOP
package.
MCP73837/8
(PDA)
DS22071A-page 1

Related parts for MCP73837T-NVI/MF

MCP73837T-NVI/MF Summary of contents

Page 1

... Temperature Range: -40°C to 85°C • Packaging: - 10-Lead DFN - 10-Lead MSOP* * Consult Factory for MSOP Package Availability. © 2007 Microchip Technology Inc. MCP73837/8 Applications • Smart Phones and Personal Data Assistants (PDA) • Portable Media Players(PMP) • Ultra Mobile Devices(UMD) • ...

Page 2

... KΩ 3 STAT1 1 KΩ 4 STAT2 PROG2 5 V PROG1 BAT 9 THERM 8 PG (TE) 7 PROG2 6 PROG1 10 BAT Thermsitor 4.7 µF Single 9 Li-Ion Cell Low 6 R PROG 10 V BAT Thermsitor 4.7 µF 9 Cell Low 7 Hi Low 6 R PROG © 2007 Microchip Technology Inc. ...

Page 3

... PROG1 REFERENCE, V REF (1.21V) BIAS, UVLO, AND SHDN VO UVLO REG TERM PROG2 CHARGE CHARGE CONTROL, STAT1 TIMER, AND STATUS LOGIC STAT2 LDO PG (TE) HTVT LTVT © 2007 Microchip Technology Inc. 100 mA/500 mA 10k AC/USB 1k AC/USB 111k 310k + - 72.7k - PRECONDITION + - + 6k 157. 470.6k ...

Page 4

... OUT V =[V (typical)+1V] DD REG dB I =10 mA, 10Hz to 1 kHz OUT dB I =10 mA, 10Hz to 10 kHz OUT dB I =10 mA, 10Hz to 1 MHz OUT mA PROG1 = 10 kΩ mA PROG1 = 1 kΩ, Note 2 T =-5°C to +55° USB © 2007 Microchip Technology Inc. ...

Page 5

... USB-Port. 2: The value is guaranteed by design and not production tested. 3: The current is based on the ratio of selected current regulation (I 4: The maximum charge impedance has to be less than shutdown impedance for normal operation. © 2007 Microchip Technology Inc REG = [V (typical) + 1.0V] DD ...

Page 6

... THERM V V Low to High High to Low µA Stand-by Or System Test Mode µF I < 250 mA OUT µF I > 250 mA OUT V 2.3V < V < V BAT REG V Falling 2.3V < V < V BAT REG V Rising DD °C ° USB © 2007 Microchip Technology Inc. ...

Page 7

... Operating Temperature Range Storage Temperature Range Thermal Package Resistances Thermal Resistance, 10-Lead MSOP Thermal Resistance, 10-Lead DFN Note 1: This represents the minimum copper condition on the PCB ( Printed Circuit Board). © 2007 Microchip Technology Inc REG (typical) + 1.0V] Sym Min Typ Max t — ...

Page 8

... FIGURE 2-6: Programming Resistor (R = +25°C, Constant-voltage mode 4. Temperature (°C) Output Leakage Current ) vs. Ambient Temperature ( Floating Battery Voltage (V) Output Leakage Current ) vs. Battery Voltage (V ). BAT V = 5.2V DD Temp = 25°C R (kΩ) PROG Charge Current (I ) vs. OUT ). PROG © 2007 Microchip Technology Inc. ...

Page 9

... Charge Current (I Supply Voltage ( 1100 1050 1000 950 900 850 800 750 700 -40 -30 -20 - Ambient Temperature (°C) FIGURE 2-9: Charge Current (I Ambient Temperature ( © 2007 Microchip Technology Inc (typical and T REG OUT 110 kΩ 108 PROG Temp = +25°C 106 104 102 100 ...

Page 10

... FIGURE 2-18: THERM Rejection (PSRR). = +25°C, Constant-voltage mode 5.2V DD Ambient Temperature (°C) Thermistor Current (I THERM ). A 0 100 1000 Frequency (kHz) Power Supply Ripple = 100 mA = 4.7 µF 0 100 1000 Frequency (kHz) Power Supply Ripple © 2007 Microchip Technology Inc. ) ...

Page 11

... Time (µs) FIGURE 2-20: Line Transient Response. 0. 0.3 OUT 0.25 0.2 0.15 0.1 0.05 0 -0.05 Time (Minutes) FIGURE 2-21: Load Transient Response. © 2007 Microchip Technology Inc (typical and T REG OUT 1 0.1 0.9 0.8 0 0.7 0.6 -0.1 0.5 0.4 0.3 -0.2 ...

Page 12

... Constant-voltage mode. A 0.12 0.1 0.08 0.06 0.04 0.02 = USB_Low 0 Time (Minutes) Complete Charge Cycle 0.12 0.1 0.08 0.06 C.V. Begins 0. 5. USB_Low PROG 0.02 180 mAh Li-Ion Battery Time (Minutes) Typical Charge Profile in © 2007 Microchip Technology Inc. ...

Page 13

... Charge Status Output 2 (STAT2) 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. Table 3-1. I/O I AC-Adapter Supply Input I USB-Port Supply Input ...

Page 14

... Battery Temperature Monitor (THERM) MCP73837/8 continuously monitors temperature during a charge cycle by measuring the voltage between the THERM and µA current source provides the bias for the most common 10 kΩ negative-temperature thermistors (NTC). © 2007 Microchip Technology Inc. the battery pins. An internal coefficient ...

Page 15

... THERM DD STAT1 = LOW STAT2 = LOW PG = LOW Timer Suspended TEMPERATURE FAULT No Charge Current STAT1 = Hi-Z STAT2 = Hi LOW Timer Suspended FIGURE 4-1: Flow Chart. © 2007 Microchip Technology Inc. * SHUTDOWN MODE* Continuously Monitored V V < - 100 mV DD BAT V < STOP STAT1 = Hi-Z ...

Page 16

... PROG1/2 pin is opened, the MCP73837/8 enters the Stand-by mode where it remains until a battery is reinserted or the PROG1/2 pin Characteristics” for pin rises above the BAT . The SS 1000V I = ---------------- - REG R PROG is in REG from a USB-Port, the host ., REG © 2007 Microchip Technology Inc. ...

Page 17

... Li-Ion batteries to prolong the life of Li-Ion batteries while keeping their capacity at healthy level. © 2007 Microchip Technology Inc. 4.9 Thermal Regulation The MCP73837/8 limits the charge current based on the die temperature. The thermal regulation optimizes the charge cycle time while maintaining device reliability ...

Page 18

... LEDs. Optionally, the charge status outputs can be used as an interface to a host microcontroller. the status outputs during a charge cycle. pins BAT with a minimum SS - 100 mV) with no battery DD is disabled during shutdown, Table 5-1 summarizes the state of © 2007 Microchip Technology Inc. ...

Page 19

... REG MCP73837 will pulse the PG output as the device determines if a battery is present. The PG option is available only on MCP73837. © 2007 Microchip Technology Inc. 5.2.4 TIMER ENABLE (TE) OPTION The timer enable (TE) input option is used to enable or disable the internal timer. A low signal on this pin enables the internal timer and a high signal disables the internal timer ...

Page 20

... Preconditioning mode to the Constant-current mode. In this case, the power dissipation is: Figure 6-1 depicts a typical stand- Figure 6-2 depict the accompanying charge 10 BAT Thermsitor C Single OUT 9 Li-Ion Cell Low 6 R PROG has transitioned from the Figure 6-1 is © 2007 Microchip Technology Inc. ...

Page 21

... The current regulation set input pin (PROG1/2) can be used to terminate a charge at any time during the charge cycle, as well as to initiate a charge cycle or initiate a recharge cycle. © 2007 Microchip Technology Inc. Placing a programming resistor from the PROG1 input driving PROG2 to logic High or Low enables ...

Page 22

... DS22071A-page 22 Marking Marking Part Number * Code Code BABA MCP73837T-FCI/MF BABA BABB MCP73837T-FJI/MF BABB BABC MCP73837T-NVI/MF BABC BACA MCP73838T-FCI/MF BACA BACB MCP73838T-FJI/MF BACB BACC MCP73838T-NVI/MF BACC Marking Marking Part Number * Code ...

Page 23

... D N NOTE TOP VIEW A3 © 2007 Microchip Technology Inc EXPOSED PAD BOTTOM VIEW A A1 NOTE 2 MCP73837 NOTE DS22071A-page 23 ...

Page 24

... MCP73837 NOTE DS22071A-page φ © 2007 Microchip Technology Inc. ...

Page 25

... APPENDIX A: REVISION HISTORY Revision A (November 2007) • Original Release of this Document. © 2007 Microchip Technology Inc. MCP73837/8 DS22071A-page 25 ...

Page 26

... MCP73837/8 NOTES: DS22071A-page 26 © 2007 Microchip Technology Inc. ...

Page 27

... XX Device Output Temp. Package Options* Device: MCP73837: 1A Fully Integrated Charger, PG function on pin 8 MCP73837T: 1A Fully Integrated Charger, PG function on pin 8 (Tape and Reel) MCP73838: 1A Fully Integrated Charger, TE function on pin 8 MCP73838T: 1A Fully Integrated Charger, TE function on pin 8 (Tape and Reel) Output Options * * * Refer to table below for different operational options. ...

Page 28

... MCP73837/8 NOTES: DS22071A-page 28 © 2007 Microchip Technology Inc. ...

Page 29

... PowerInfo, PowerMate, PowerTool, REAL ICE, rfLAB, Select Mode, Smart Serial, SmartTel, Total Endurance, UNI/O, WiperLock and ZENA are trademarks of Microchip Technology Incorporated in the U.S.A. and other countries. SQTP is a service mark of Microchip Technology Incorporated in the U.S.A. All other trademarks mentioned herein are property of their respective companies. ...

Page 30

... Fax: 886-3-572-6459 Taiwan - Kaohsiung Tel: 886-7-536-4818 Fax: 886-7-536-4803 Taiwan - Taipei Tel: 886-2-2500-6610 Fax: 886-2-2508-0102 Thailand - Bangkok Tel: 66-2-694-1351 Fax: 66-2-694-1350 © 2007 Microchip Technology Inc. EUROPE Austria - Wels Tel: 43-7242-2244-39 Fax: 43-7242-2244-393 Denmark - Copenhagen Tel: 45-4450-2828 Fax: 45-4485-2829 France - Paris Tel: 33-1-69-53-63-20 ...

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