IC LIION CHRGR USB/AC-IN 10DFN

MCP73838T-NVI/MF

Manufacturer Part NumberMCP73838T-NVI/MF
DescriptionIC LIION CHRGR USB/AC-IN 10DFN
ManufacturerMicrochip Technology
MCP73838T-NVI/MF datasheet
 

Specifications of MCP73838T-NVI/MF

Battery TypeLithium-Ion (Li-Ion), Lithium-Polymer (Li-Pol)Operating Temperature-40°C ~ 85°C
FunctionCharge ManagementVoltage - Supply4.5 V ~ 6 V
Mounting TypeSurface MountPackage / Case10-DFN
Input Voltage6VBattery Charge Voltage4.5V
Charge Current Max1000mABattery Ic Case StyleDFN
No. Of Pins10No. Of Series Cells1
ProductCharge ManagementOutput Voltage4.2 V, 4.35 V, 4.4 V, 4.5 V
Output Current1200 mAOperating Supply Voltage3.75 V to 6 V
Maximum Operating Temperature+ 85 CMinimum Operating Temperature- 40 C
Mounting StyleSMD/SMTLead Free Status / RoHS StatusLead free / RoHS Compliant
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Advanced Stand-Alone Li-Ion / Li-Polymer Battery Charge
Management Controller with Autonomous AC-Adapter or
USB-Port Source Selection
Features
• High Accuracy Preset Voltage Regulation: + 0.5%
• Available Voltage Regulation Options:
- 4.20V, 4.35V, 4.4V, or 4.5V
• Complete Linear Charge Management Controller:
- Autonomous Power Source Selection
- Integrated Pass Transistors
- Integrated Current Sense
- Integrated Reverse Discharge Protection
• Constant Current (CC) / Constant Voltage (CV)
Operation with Thermal Regulation
• Selectable USB-Port Charge Current:
- Low: 1 Unit Load / High: 5 Unit Loads
• Programmable AC-Adapter Charge Current:
- 15 mA - 1000 mA
• Two Charge Status Outputs
• Power-Good Monitor: MCP73837
• Timer Enable: MCP73838
• Automatic Recharge:
- Selectable Voltage Threshold
• Automatic End-of-Charge Control:
- Selectable Charge Termination Current Ratio
- Selectable Safety Timer Period
• Preconditioning of Deeply Depleted Cells - can be
disabled
• Battery Cell Temperature Monitor
• UVLO (Undervoltage Lockout)
• Automatic Power-Down when Input Power is
Removed
• Low-Dropout (LDO) Linear Regulator Mode
• Numerous Selectable Options Available for a
Variety of Applications:
- Refer to Section 1.0 “Electrical
Characteristics” for Selectable Options”
- Refer to the “Product Identification
System” for Standard Options
• Temperature Range: -40°C to 85°C
• Packaging:
- 10-Lead 3 mm x 3 mm 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)
• 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.
DS22071A-page 1

MCP73838T-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

    ... 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 Code 837FCI MCP73837T-FCI/UN 837FCI 837FJI MCP73837T-FJI/UN 837FJI 837NVI MCP73837T-NVI/UN 837NVI 838FCI MCP73838T-FCI/UN 838FCI 838FJI ...

  • 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

    ... 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 Consult Factory for Alternative Device 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 ...