MCP73853.pdf 데이터시트 (총 24 페이지) - 파일 다운로드 MCP73853 데이타시트 다운로드

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MCP73853/55
USB Compatible Li-Ion/Li-Polymer
Charge Management Controllers
Features
• Linear Charge Management Controllers
- Integrated Pass Transistor
- Integrated Current Sense
- Reverse Blocking Protection
• High-Accuracy Preset Voltage Regulation: + 0.5%
• Two Selectable Voltage Regulation Options:
- 4.1V, 4.2V
• Programmable Charge Current
• USB Compatible Charge Current Settings
• Programmable Safety Charge Timers
• Preconditioning of Deeply Depleted Cells
• Automatic End-of-Charge Control
• Optional Continuous Cell Temperature
Monitoring:
- MCP73853
• Charge Status Output for Direct LED Drive
• Fault Output for Direct LED Drive
- MCP73853
• Automatic Power-Down
• Thermal Regulation
• Temperature Range: -40°C to +85°C
• Packaging:
- 16-Lead, 4x4 mm QFN (MCP73853)
- 10-Lead, 3x3 mm DFN (MCP73855)
Applications
• Lithium-Ion/Lithium-Polymer Battery Chargers
• Personal Data Assistants (PDAs)
• Cellular Telephones
• Hand-Held Instruments
• Cradle Chargers
• Digital Cameras
• MP3 Players
• Bluetooth Headsets
• USB Chargers
Description
The MCP7385X devices are highly advanced linear
charge management controllers for use in space-
limited, cost-sensitive applications. The MCP73853
combines high-accuracy constant-voltage, constant-
current regulation, cell preconditioning, cell temperature
monitoring, advanced safety timers, automatic charge
termination, internal current sensing, reverse blocking
protection and charge status and fault indication in a
space-saving 16-lead, 4 x 4 QFN package.
The MCP73855 employs all the features of the
MCP73853, with the exception of the cell temperature
monitor and one status output. The MCP73855 is
offered in a space-saving 10-lead, 3 x 3 DFN package.
The MCP73853 and MCP73855 are designed
specifically for USB applications, adhering to all the
specifications governing the USB power bus.
The MCP7385X devices provide two selectable voltage
regulation options (4.1V or 4.2V) for use with either
coke or graphite anodes.
The MCP7385X devices provide complete, fully-
functional, charge management solutions, operating
with an input voltage range of 4.5V to 5.5V.
The MCP7385X devices are fully specified over the
ambient temperature range of -40°C to +85°C.
Package Types
16-Pin QFN
16 15 14 13
VSET 1
12 VBAT3
VDD1 2
VDD2 3
MCP73853
11 VBAT2
10 VBAT1
VSS1 4
9 VSS3
5678
10-Pin DFN
STAT1 1
10 EN
VSET 2
9 VBAT2
VDD1 3 MCP73855 8 VBAT1
VSS1 4
PROG 5
7 VSS2
6 TIMER
2004 Microchip Technology Inc.
DS21915A-page 1

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MCP73853/55
Typical Application
400 mA Lithium-Ion Battery Charger
5V
4.7 µF
3 VDD1
VBAT1 8
2 VSET
10 EN
VBAT2 9
1 STAT1
TIMER 6
5 PROG VSS 4, 7
MCP73855
4.7 µF
0.1 µF
+ Single
Lithium-Ion
Cell
Functional Block Diagram
VDD1
VDD2
PROG
EN
Direction
Control
VDD
G = 0.001
4 k
3 k
11 k
VREF
90 Charge Current
kControl Amplifier
+
Voltage Control
Amplifier
VREF
110 k
10 k
Charge
Termination
10
k
Comparator
+
IREG/12
UVLO
COMPARATOR
+
VUVLO
Precondition
Control
VREF
Charge_OK Precondition
Precon
Comp.
Constant-voltage/
Recharge Comp.
600 k
149 k
Power-On
Delay
VREF
1.58 k
300 k
VBAT1
VBAT2
VBAT3
THREF
THERM
TIMER
100 k
50 k
50 k
Bias and
Reference
Generator
VUVLO
VREF(1.2V)
Temperature
Comparators
+
-
+
-
MCP73853 ONLY
VSET
IREG/12
Oscillator
Drv Stat 1
Charge Control,
Charge Timers,
and
Status Logic Drv Stat 2
10.3 k
VSS1
VSS2
VSS3
STAT1
STAT2
MCP73853 ONLY
Charge_OK
DS21915A-page 2
2004 Microchip Technology Inc.

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MCP73853/55
1.0 ELECTRICAL
CHARACTERISTICS
Absolute Maximum Ratings*
VDD1,2...............................................................................6.5V
All Inputs and Outputs w.r.t. VSS ..............-0.3 to (VDD + 0.3)V
Maximum Junction Temperature, TJ ............ Internally Limited
Storage temperature .....................................-65°C to +150°C
ESD protection on all pins:
Human Body Model (1.5kW in Series with 100pF) ....≥ 4 kV
Machine Model (200pF, No Series Resistance) ..........400V
*Notice: Stresses above those listed under “Maximum
Ratings” may cause permanent damage to the device. This is
a stress rating only and functional operation of the device at
those or any other conditions above those indicated in the
operational listings of this specification is not implied.
Exposure to maximum rating conditions for extended periods
may affect device reliability.
DC CHARACTERISTICS
Electrical Specifications: Unless otherwise indicated, all limits apply for VDD = [VREG(Typ) + 0.3V] to 5.5V,
TA = -40°C to 85°C. Typical values are at +25°C, VDD = [VREG (Typ) + 1.0V]
Parameters
Sym
Min Typ Max Units
Conditions
Supply Input
Supply Voltage
Supply Current
VDD
ISS
4.5
UVLO Start Threshold
VSTART
4.25
UVLO Stop Threshold
VSTOP
4.20
Voltage Regulation (Constant-Voltage Mode)
0.28
0.83
4.45
4.40
5.5
4
4
4.65
4.55
V
µA Disabled
mA Operating
V VDD Low-to-High
V VDD High-to-Low
Regulated Output Voltage
Line Regulation
Load Regulation
Supply Ripple Attenuation
Output Reverse-Leakage
Current
VREG
4.079
4.179
|(∆VBAT/
VBAT)| /VDD
|∆VBAT/VBAT|
PSRR
IDISCHARGE
4.1
4.2
0.020
0.022
50
26
24
0.24
4.121
4.221
0.25
0.25
1
V VSET = VSS
V VSET = VDD
VDD = [VREG(Typ) + 1V],
IOUT = 10 mA, TA = -5°C to +55°C
%/V VDD = [VREG(Typ) + 1V] to 5.5V
IOUT = 10 mA
% IOUT = 10 mA to 150 mA
VDD = [VREG(Typ) + 1V]
dB IOUT = 10 mA, 10 Hz to 1 kHz
dB IOUT = 10 mA, 10 Hz to 10 kHz
dB IOUT = 10 mA, 10 Hz to 1 MHz
µA VDD < VBAT = VREG(Typ)
Current Regulation (Fast Charge Constant-Current Mode)
Fast Charge Current
Regulation
IREG
70 85 100 mA PROG = OPEN
325 400 475 mA PROG = VSS
TA = -5°C to +55°C
Preconditioning Current Regulation (Trickle Charge Constant-Current Mode)
Precondition Current
Regulation
Precondition Threshold
Voltage
IPREG
VPTH
5
25
2.70
2.75
9
40
2.80
2.85
15
75
2.90
2.95
mA PROG = OPEN
mA PROG = VSS
TA = -5°C to +55°C
V VSET = VSS
V VSET = VDD
VBAT Low-to-High
2004 Microchip Technology Inc.
DS21915A-page 3

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MCP73853/55
DC CHARACTERISTICS (Continued)
Electrical Specifications: Unless otherwise indicated, all limits apply for VDD = [VREG(Typ) + 0.3V] to 5.5V,
TA = -40°C to 85°C. Typical values are at +25°C, VDD = [VREG (Typ) + 1.0V]
Parameters
Sym
Min Typ Max Units
Conditions
Charge Termination
Charge Termination Current
ITERM
3.7 6.5 9.3
18 32 46
Automatic Recharge
Recharge Threshold Voltage
VRTH
VREG – VREG – VREG
300mV 200mV 100mV
Thermistor Reference - MCP73853
Thermistor Reference
Output Voltage
VTHREF 2.475 2.55 2.625
Thermistor Reference
Source Current
ITHREF
200 —
Thermistor Reference Line
Regulation
Thermistor Reference Load
Regulation
|(∆VTHREF/
VTHREF)|/VDD
|∆VTHREF/
VTHREF|
0.05 0.25
0.02 0.10
Thermistor Comparator - MCP73853
Upper Trip Threshold
VT1
Upper Trip Point Hysteresis
VT1HYS
Lower Trip Threshold
VT2
Lower Trip Point Hysteresis
VT2HYS
Input Bias Current
IBIAS
Status Indicator – STAT1, STAT2
1.18 1.25 1.32
— -50 —
0.59 0.62 0.66
— 80 —
——
2
Sink Current
Low Output Voltage
Input Leakage Current
Enable Input
ISINK
VOL
ILK
4 8 12
— 200 400
— 0.01
1
Input High Voltage Level
Input Low Voltage Level
Input Leakage Current
Thermal Shutdown
VIH
1.4 —
VIL — — 0.8
ILK
— 0.01
1
Die Temperature
Die Temperature Hysteresis
TSD
TSDHYS
— 155 —
— 10 —
mA PROG = OPEN
mA PROG = VSS
TA = -5°C to +55°C
V VBAT High-to-Low
V TA = 25°C, VDD = VREG(Typ) + 1V,
ITHREF = 0 mA
µA
%/V VDD = [VREG (Typ) + 1V] to 5.5V
% ITHREF = 0 mA to 0.20 mA
V
mV
V
mV
µA
mA
mV ISINK = 1 mA
µA ISINK = 0 mA, VSTAT1,2 = 5.5V
V
V
µA VENABLE = 5.5V
°C
°C
DS21915A-page 4
2004 Microchip Technology Inc.

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MCP73853/55
AC CHARACTERISTICS
Electrical Specifications: Unless otherwise indicated, all limits apply for VDD = [VREG (Typ) + 0.3V] to 5.5V,
TA = -40°C to 85°C. Typical values are at +25°C, VDD = [VREG (Typ) + 1.0V]
Parameters
Sym
Min Typ Max Units
Conditions
UVLO Start Delay
Current Regulation
tSTART
Transition Time Out of
Preconditioning
tDELAY
Current Rise Time Out of
Preconditioning
tRISE
Fast Charge Safety Timer
Period
tFAST
Preconditioning Current Regulation
Preconditioning Charge
Safety Timer Period
tPRECON
Charge Termination
Elapsed Time Termination
Period
tTERM
Status Indicators
Status Output turn-off
Status Output turn-on
tOFF
tON
— — 5 ms VDD Low-to-High
— — 1 ms VBAT < VPTH to VBAT > VPTH
— — 1 ms IOUT Rising to 90% of IREG
1.1 1.5 1.9 Hours CTIMER = 0.1 µF
45 60 75 Minutes CTIMER = 0.1 µF
2.2 3 3.8 Hours CTIMER = 0.1 µF
— — 200 µs ISINK = 1 mA to 0 mA
— — 200 µs ISINK = 0 mA to 1 mA
TEMPERATURE SPECIFICATIONS
Electrical Specifications: Unless otherwise indicated, all limits apply for VDD = [VREG (Typ) + 0.3V] to 5.5.
Typical values are at +25°C, VDD = [VREG (Typ) + 1.0V]
Parameters
Sym Min Typ Max Units
Conditions
Temperature Ranges
Specified Temperature Range
Operating Temperature Range
Storage Temperature Range
Thermal Package Resistances
TA -40 — +85 °C
TJ -40 — +125 °C
TA -65 — +150 °C
4-Layer JC51-7
Thermal Resistance, 16-L, 4mm x 4mm QFN θJA — 37 — °C/W Standard Board,
Natural Convection
4-Layer JC51-7
Thermal Resistance, 10-L, 3mm x 3mm DFN θJA — 51 — °C/W Standard Board,
Natural Convection
2004 Microchip Technology Inc.
DS21915A-page 5