LTC4009IUF-1#TRPBF Linear Technology, LTC4009IUF-1#TRPBF Datasheet

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LTC4009IUF-1#TRPBF

Manufacturer Part Number
LTC4009IUF-1#TRPBF
Description
IC CTLR BATT CHARGER CC/CV 20QFN
Manufacturer
Linear Technology
Datasheet

Specifications of LTC4009IUF-1#TRPBF

Function
Charge Management
Battery Type
Multi-Chemistry
Voltage - Supply
6 V ~ 28 V
Operating Temperature
0°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
20-WFQFN Exposed Pad
Lead Free Status / RoHS Status
Lead free / RoHS Compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
LTC4009IUF-1#TRPBFLTC4009IUF-1
Manufacturer:
LT
Quantity:
10 000
Company:
Part Number:
LTC4009IUF-1#TRPBFLTC4009IUF-1#PBF
Manufacturer:
LINEAR/凌特
Quantity:
20 000
FeaTures
applicaTions
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
Typical applicaTion
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and
PowerPath and ThinSOT are trademarks of Linear Technology Corporation. All other trademarks
are the property of their respective owners. Protected by U.S. Patents including 5723970.
General Purpose Battery Charger Controller
Efficient 550kHz Synchronous Buck PWM Topology
±0.5% Output Float Voltage Accuracy
Programmable Charge Current: 4% Accuracy
Programmable AC Adapter Current Limit:
3% Accuracy
No Audible Noise with Ceramic Capacitors
Wide Input Voltage Range: 6V to 28V
Wide Output Voltage Range: 2V to 28V
Indicator Outputs for AC Adapter Present, Charging,
C/10 Current Detection and Input Current Limiting
Analog Charge Current Monitor
Micropower Shutdown
Thermally Enhanced 20-Pin 4mm × 4mm × 0.75mm
QFN Package
Notebook Computers
Portable Instruments
Battery Backup Systems
CURRENT
MONITOR
CHARGE
13V TO 20V
ADAPTER
FROM
TO/FROM
4.7nF
MCU
14.3k
1.5k
6.04k
26.7k
0.1µF
0.1µF
DCIN
DCDIV
CHRG
ACP
ICL
SHDN
ITH
PROG
LTC4009
INTV
BOOST
TGATE
BGATE
FBDIV
GND
CLN
CSP
CSN
CLP
BAT
SW
V
DD
FB
0.1µF
301k
32.8k
2µF
3.01k
3.01k
33m
0.1µF
5.1k
20µF
+
33m
6.8µH
4009 TA01a
12.3V
Li-Ion
BATTERY
20µF
POWER TO
SYSTEM
DescripTion
The LTC
battery charger controller. It uses a synchronous quasi-
constant frequency PWM control architecture that will
not generate audible noise with ceramic bulk capacitors.
Charge current is set by the combination of external
sense, input and programming resistors. With no built-in
termination, the LTC4009 family charges a wide range of
batteries under external control.
The LTC4009 features a fully adjustable output voltage, while
the LTC4009-1 and LTC4009-2 can be pin-programmed for
lithium-ion/polymer battery packs of 1-, 2-, 3- or 4-series
cells. The LTC4009-1 provides output voltage of 4.1V/cell,
and the LTC4009-2 is a 4.2V/cell version.
The device includes AC adapter input current limiting which
maximizes the charge rate for a fixed input power level. An
external sense resistor programs the input current limit, and
the ICL status pin indicates when the battery charge current
is being reduced as a result of AC adapter current limiting.
The CHRG status pin is active during all charging modes,
including special indication for low charge current.
®
4009 is a constant-current/constant-voltage
LTC4009-1/LTC4009-2
100
95
90
85
80
75
70
0
Battery Charger
Efficiency at DCIN = 20V
High Efficiency,
Multi-Chemistry
0.5
CHARGE CURRENT (A)
1.0
EFFICIENCY
V
R
R
R
D
L = IHLP-2525CZ 6.8µH
1.5
OUT
SENSE
IN
PROG
IN
POWER LOSS
= 3.01k
= SSB44
= 12.3V
= 26.7k
2.0
= 33m
LTC4009
2.5
4009 TA01b
3.0
10000
1000
100
4009fd


Related parts for LTC4009IUF-1#TRPBF

LTC4009IUF-1#TRPBF Summary of contents

Page 1

... Portable Instruments n Battery Backup Systems n L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and PowerPath and ThinSOT are trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. Protected by U.S. Patents including 5723970. Typical applicaTion ...

Page 2

... LTC4009CUF-2#PBF LTC4009CUF-2#TRPBF LTC4009IUF#PBF LTC4009IUF#TRPBF LTC4009IUF-1#PBF LTC4009IUF-1#TRPBF LTC4009IUF-2#PBF LTC4009IUF-2#TRPBF Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container. Consult LTC Marketing for information on non-standard lead based finish parts. For more information on lead free part marking, go to: ...

Page 3

T SYMBOL PARAMETER Charge Voltage Regulation V V Accuracy (See Test Circuits) TOL BAT I V Input Bias Current VFB FB R FBDIV On-Resistance ON I FBDIV Output Leakage Current LEAK-FBDIV V ...

Page 4

LTC4009 LTC4009-1/LTC4009-2 elecTrical characTerisTics temperature range, otherwise specifications are at T SYMBOL PARAMETER V SHDN Input Voltage High IH R SHDN Pull-Down Resistance IN I DCIN Shutdown Current DCS I CLP Shutdown Current CLPS I BAT Leakage Current LEAK-BAT I ...

Page 5

TesT circuiTs LTC4009 FROM ICL (CLP = CLN) – – EA – + 1.2085V PROG 1.2085V TARGET LTC1055 – Typical perForMance characTerisTics (T = 25°C unless otherwise noted SSB44 IHLP-2525 6.8µH) ...

Page 6

LTC4009 LTC4009-1/LTC4009-2 Typical perForMance characTerisTics (T = 25°C unless otherwise noted SSB44 IHLP-2525 6.8µ Battery Load Dump 2A 1A 12. RECONNECT LOAD DISCONNECT STATE 4009 G06 CLP = 20V TIME (1ms/DIV) V ...

Page 7

Typical perForMance characTerisTics (T = 25°C unless otherwise noted SSB44 IHLP-2525 6.8µ PWM Frequency vs Charge Current 600 500 400 CLP = 15V R = 33m 300 SENSE R = 3.01k IN 200 100 ...

Page 8

LTC4009 LTC4009-1/LTC4009-2 pin FuncTions FVS0 (Pin 9, LTC4009-1/LTC4009-2): Battery Voltage Select Input (LSB). This pin is one of two pins used on the LTC4009-1 or LTC4009-2 to select one of four preset battery voltages. Selection is done by connecting to ...

Page 9

DiagraM (LTC4009) DCIN 3 CLP 2 CURRENT CLN 1 ICL 4 CHRG C/10 8 DETECTION OSCILLATOR BAT 11 CHARGE FBDIV 9 DCDIV SHUTDOWN SHUTDOWN 5 CONTROL ACP 7 SHDN 6 BOOST AND OV DETECTION INPUT LIMIT ...

Page 10

LTC4009 LTC4009-1/LTC4009-2 block DiagraM (LTC4009-1/LTC4009-2) DCIN 3 CLP 2 CURRENT CLN 1 ICL 4 CHRG C/10 8 DETECTION FVS1 10 OUTPUT FVS0 9 VOLTAGE SELECT BAT 11 OSCILLATOR DCDIV SHUTDOWN SHUTDOWN 5 CONTROL ACP 7 SHDN 6 0 BOOST AND ...

Page 11

Overview The LTC4009 is a synchronous step-down (buck) current mode PWM battery charger controller. The maximum charge current is programmed by the combination of a charge current sense resistor (R SENSE resistors (R , Figure 1), and a programming ...

Page 12

LTC4009 LTC4009-1/LTC4009-2 operaTion LTC4009 CLP CLOCK 2 OSCILLATOR BAT 11 Charge Current Monitoring When the LTC4009 is charging, the voltage on the PROG pin varies in direct proportion to the charge current. Referring to Figure 1, the nominal PROG voltage ...

Page 13

Table 1 summarizes the state of the three indicator outputs as a function of LTC4009 operation. Table 1. LTC4009 Open-Drain Indicator Outputs ACP CHRG ICL CHARGER STATE Off Off Off ...

Page 14

LTC4009 LTC4009-1/LTC4009-2 operaTion PWM Watchdog Timer As input and output conditions vary, the LTC4009 may need to utilize PWM duty cycles approaching 100%. In this case, operating frequency may be reduced well below 550kHz. An internal watchdog timer observes the ...

Page 15

Programming Charge Current The formula for charge current is:  2085 . • –   CHRG R R SENSE PROG The LTC4009 operates best with 3.01k input resistors, although ...

Page 16

LTC4009 LTC4009-1/LTC4009-2 applicaTions inForMaTion LTC4009 PROG 13 R PROG C PROG 5V Q1 2N7002 0V Figure 4. Programming PWM Current compensation capacitance connected to ITH to maintain stability or prevent large current overshoot during start- up. Selecting a higher Q1 ...

Page 17

Programming LTC4009-1/LTC4009-2 Output Voltage The LTC4009-1/LTC4009-2 feature precision internal bat- tery voltage feedback resistor taps configured for common lithium-ion voltages. All that is required to program the desired voltage is proper pin programming of FVS0 and FVS1 as ...

Page 18

LTC4009 LTC4009-1/LTC4009-2 applicaTions inForMaTion limit value. The second is to make the input current limit value programmable. The overall accuracy of this circuit needs to be better than the power source current tolerance or be margined such that the worse-case ...

Page 19

greater than 26.7k, the actual level at which PROG low charge current is detected will be less than C/10. The highest value of R that can be used while reliably PROG indicating low charge current ...

Page 20

LTC4009 LTC4009-1/LTC4009-2 applicaTions inForMaTion Input and Output Capacitors In addition to typical input supply bypassing (0.1µF) on DCIN, the relatively high ESR of aluminum electrolytic capacitors is helpful for reducing ringing when hot plug- ging the charger to the AC ...

Page 21

The LTC4009 limits maximum instantaneous peak inductor current during every PWM cycle. To avoid unstable switch waveforms, the ripple current must satisfy:   150 mV ∆I < 2 • – I     L MAX ...

Page 22

LTC4009 LTC4009-1/LTC4009-2 applicaTions inForMaTion where Q is the rated gate charge of the top external NFET G with V = 4.5V. The maximum average diode current is GS then given by • 665kHz improve ...

Page 23

The LTC4009 uses an improved adaptive TGATE and BGATE drive that is insensitive to MOSFET inertial delays avoid overlap conduction losses. Switching d(ON/OFF) characteristics from power MOSFET data sheets apply only to a specific test ...

Page 24

LTC4009 LTC4009-1/LTC4009-2 applicaTions inForMaTion PCB Layout Considerations To prevent magnetic and electrical field radiation and high frequency resonant problems, proper layout of the components connected to the LTC4009 is essential. Refer to Figure 12. For maximum efficiency, the switch node ...

Page 25

If possible, place all the parts listed above on the same PCB layer. 11. Copper fills or pours are good for all power connections except as noted above in Rule 3. Copper planes on multiple layers can ...

Page 26

LTC4009 LTC4009-1/LTC4009-2 package DescripTion 4.50 ± 0.05 3.10 ± 0.05 2.45 ± 0.05 2.00 REF 2.45 ± 0.05 RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS APPLY SOLDER MASK TO AREAS THAT ARE NOT SOLDERED 4.00 ± 0.10 PIN 1 TOP MARK ...

Page 27

... I-Grade Parts Added. Reflected Throughout the Data Sheet Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no representa- tion that the interconnection of its circuits as described herein will not infringe on existing patent rights. ...

Page 28

... THE COMBINATION OF R14 AND Q4 10µH R11 50m + D2, D4: MBR230LSFT1 12.6V D3:CMDSH-3 Li-Ion Q1: 2N7002 BATTERY Q2, Q3: Si7212DN OR SiA914DJ OR Si4816BDY (OMIT D4) 4009 TA02 L1: IHLP-2525CZER100M11 *SEE TGATE BOOST SUPPLY IN APPLICATIONS INFORMATION package TM LT 0610 REV D • PRINTED IN USA  LINEAR TECHNOLOGY CORPORATION 2008 4009fd ...

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