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DC1284A

Description
board eval for ltc4098epdc
CategoryDevelopment board/suite/development tools   
File Size253KB,6 Pages
ManufacturerLinear ( ADI )
Websitehttp://www.analog.com/cn/index.html
Environmental Compliance  
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DC1284A Overview

board eval for ltc4098epdc

DEMO CIRCUIT DC1303A
QUICK START GUIDE
LTC4098EPDC: USB
Compatible Switching Power Manager/Li-Ion
Charger with Overvoltage Protection
DESCRIPTION
Demonstration Circuit 1303A is a high efficiency USB
Power/Li-Ion battery manager plus a HV regulator bat-
tery tracking controller. The LTC4098EPDC is avail-
able in a 20-pin (3mm × 4mm × 0.55mm) UTQFN sur-
face mount package.
L
, LTC, LTM, LT, Burst Mode, OPTI-LOOP, Over-The-Top and PolyPhase are registered
trademarks of Linear Technology Corporation. Adaptive Power, C-Load, DirectSense, Easy
Drive, FilterCAD, Hot Swap, LinearView, μModule, Micropower SwitcherCAD, Multimode
Dimming, No Latency
ΔΣ,
No Latency Delta-Sigma, No R
SENSE
, Operational Filter, PanelProtect,
PowerPath, PowerSOT, SmartStart, SoftSpan, Stage Shedding, SwitcherCAD, ThinSOT,
UltraFast and VLDO are trademarks of Linear Technology Corporation. Other product names
may be trademarks of the companies that manufacture the products.
PERFORMANCE SUMMARY
Specifications are at T
A
= 25°C
SYMBOL
V
BUS
V
OUT
V
BAT
I
BAT
PARAMETER
Bus Input Voltage Range
Output Voltage Range
Output Float Voltage
Output Charge Current
CONDITIONS
Input disabled from 6V–30V
Range is mode and load dependant
Constant voltage mode
Constant current mode
MIN
4.35
3.5
TYP
MAX
5.5
5.5
1
UNITS
V
V
V
A
4.2
0.5
OPERATING PRINCIPLES
The LTC4098EPDC is a full featured USB power man-
ager and Li-Ion battery charger, with reacharound.
The Bat-Track™ battery charger pre-regulator ensures
the charger operates at the highest possible efficiency.
The LTC4098EPDC is composed of 5 functional blocks,
all working together: USB Power Manager, Pre-
regulator, Battery Charger, Ideal Diode, and OverVolt-
age Protection.
USB Power Manager
The USB Power Manager is used to manage the load
that the LTC4098EPDC system presents to the USB
interface. The load current can be programmed by
changing the CLPROG resistor (R5), and by setting the
operating mode to 1X, 5X or 10x, with the [d2-d0] in-
puts.
Please note that the charger on/off is also controlled by
the [d2-d0] inputs.
The USB Power Manager also uses the “WALL” input
to determine that power is being supplied directly to
VOUT and shuts off the internal preregulator, minimiz-
ing the load on the USB input.
Pre-Regulator
The pre-regulator is a high efficiency buck regulator
that produces a voltage at VOUT = BAT + 0.3V. The
voltage at VOUT is input to the battery charger, greatly
reducing dissipation in the charger.
The pre-regulator also monitors the WALL pin, and
when the voltage is higher than 4.3V, it shuts off.
When the voltage on the Wall pin is higher than 4.3V,
the /ACPR and VC pins are also active. The /ACPR pin
activates the gate of an N-channel MOSFET allowing a
separate HV Buck Regulator to supply VOUT. The VC
pin implements the Bat-Track function for the HV Buck
Regulator, also known as reacharound, enabling the
same high efficiency battery charger operation with an
external HV buck regulator.
Battery Charger
The battery charger operates in constant current mode,
until the battery voltage rises to approximately the
FLOAT voltage, of 4.2V, and then the charger switches
to constant voltage mode.
The charge current is programmed by the PROG (R4)
resistor, and has been set to 500mA, on DC1303A,

DC1284A Related Products

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Description board eval for ltc4098epdc board eval for ltc4098epdc IC CHARGER USB COMP 20-UTQFN IC CHARGER USB COMP 20-UTQFN IC CHARGER USB COMP 20-UTQFN IC CHARGER USB COMP 20-UTQFN IC CHARGER USB COMP 20-UTQFN IC CHARGER USB COMP 20-UTQFN IC BATTERY CHARGE CONTROLLER, 2650 kHz SWITCHING FREQ-MAX, PQCC20, 4 X 3 MM, 0.75 MM HEIGHT, LEAD FREE, PLASTIC, QFN-20, Switching Regulator or Controller IC BATTERY CHARGE CONTROLLER, 2650 kHz SWITCHING FREQ-MAX, PQCC20, 4 X 3 MM, 0.75 MM HEIGHT, LEAD FREE, PLASTIC, QFN-20, Switching Regulator or Controller
Is it Rohs certified? - - conform to conform to conform to conform to conform to conform to conform to conform to
Maker - - Linear ( ADI ) Linear ( ADI ) Linear ( ADI ) Linear ( ADI ) Linear ( ADI ) Linear ( ADI ) - Linear ( ADI )
Parts packaging code - - QFN QFN QFN QFN QFN QFN QFN QFN
package instruction - - HVQCCN, HVQCCN, HVQCCN, HVQCCN, HVQCCN, HVQCCN, HVQCCN, 4 X 3 MM, 0.75 MM HEIGHT, LEAD FREE, PLASTIC, QFN-20
Contacts - - 20 20 20 20 20 20 20 20
Reach Compliance Code - - compliant compliant compliant compliant compliant compliant compliant compliant
ECCN code - - EAR99 EAR99 EAR99 EAR99 EAR99 EAR99 EAR99 EAR99
Analog Integrated Circuits - Other Types - - BATTERY CHARGE CONTROLLER BATTERY CHARGE CONTROLLER BATTERY CHARGE CONTROLLER BATTERY CHARGE CONTROLLER BATTERY CHARGE CONTROLLER BATTERY CHARGE CONTROLLER BATTERY CHARGE CONTROLLER BATTERY CHARGE CONTROLLER
control mode - - CURRENT-MODE CURRENT-MODE CURRENT-MODE CURRENT-MODE CURRENT-MODE CURRENT-MODE CURRENT-MODE CURRENT-MODE
Control Technology - - PULSE WIDTH MODULATION PULSE WIDTH MODULATION PULSE WIDTH MODULATION PULSE WIDTH MODULATION PULSE WIDTH MODULATION PULSE WIDTH MODULATION PULSE WIDTH MODULATION PULSE WIDTH MODULATION
Maximum input voltage - - 5.5 V 5.5 V 5.5 V 5.5 V 5.5 V 5.5 V 5.5 V 5.5 V
Minimum input voltage - - 4.35 V 4.35 V 4.35 V 4.35 V 4.35 V 4.35 V 4.35 V 4.35 V
Nominal input voltage - - 5 V 5 V 5 V 5 V 5 V 5 V 5 V 5 V
JESD-30 code - - R-PQCC-N20 R-PQCC-N20 R-PQCC-N20 R-PQCC-N20 R-PQCC-N20 R-PQCC-N20 R-PQCC-N20 R-PQCC-N20
JESD-609 code - - e3 e3 e3 e3 e3 e3 e3 e3
length - - 4 mm 4 mm 4 mm 4 mm 4 mm 4 mm 4 mm 4 mm
Humidity sensitivity level - - 1 1 1 1 1 1 1 1
Number of functions - - 1 1 1 1 1 1 1 1
Number of terminals - - 20 20 20 20 20 20 20 20
Maximum operating temperature - - 85 °C 85 °C 85 °C 85 °C 85 °C 85 °C 85 °C 85 °C
Minimum operating temperature - - -40 °C -40 °C -40 °C -40 °C -40 °C -40 °C -40 °C -40 °C
Package body material - - PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY
encapsulated code - - HVQCCN HVQCCN HVQCCN HVQCCN HVQCCN HVQCCN HVQCCN HVQCCN
Package shape - - RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR
Package form - - CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE
Peak Reflow Temperature (Celsius) - - NOT SPECIFIED NOT SPECIFIED NOT SPECIFIED 250 250 NOT SPECIFIED NOT SPECIFIED 260
Certification status - - Not Qualified Not Qualified Not Qualified Not Qualified Not Qualified Not Qualified Not Qualified Not Qualified
Maximum seat height - - 0.8 mm 0.8 mm 0.8 mm 0.8 mm 0.8 mm 0.8 mm 0.8 mm 0.8 mm
surface mount - - YES YES YES YES YES YES YES YES
Switch configuration - - BUCK-BOOST BUCK-BOOST BUCK-BOOST BUCK-BOOST BUCK-BOOST BUCK-BOOST BUCK-BOOST BUCK-BOOST
Maximum switching frequency - - 2650 kHz 2650 kHz 2650 kHz 2650 kHz 2650 kHz 2650 kHz 2650 kHz 2650 kHz
technology - - CMOS CMOS CMOS CMOS CMOS CMOS CMOS CMOS
Temperature level - - INDUSTRIAL INDUSTRIAL INDUSTRIAL INDUSTRIAL INDUSTRIAL INDUSTRIAL INDUSTRIAL INDUSTRIAL
Terminal surface - - Matte Tin (Sn) Matte Tin (Sn) Matte Tin (Sn) Matte Tin (Sn) Matte Tin (Sn) Matte Tin (Sn) Matte Tin (Sn) Matte Tin (Sn)
Terminal form - - NO LEAD NO LEAD NO LEAD NO LEAD NO LEAD NO LEAD NO LEAD NO LEAD
Terminal pitch - - 0.5 mm 0.5 mm 0.5 mm 0.5 mm 0.5 mm 0.5 mm 0.5 mm 0.5 mm
Terminal location - - QUAD QUAD QUAD QUAD QUAD QUAD QUAD QUAD
Maximum time at peak reflow temperature - - NOT SPECIFIED NOT SPECIFIED NOT SPECIFIED 40 40 NOT SPECIFIED NOT SPECIFIED NOT SPECIFIED
width - - 3 mm 3 mm 3 mm 3 mm 3 mm 3 mm 3 mm 3 mm
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