LTC4055EUF#TRPBF Linear Technology, LTC4055EUF#TRPBF Datasheet
LTC4055EUF#TRPBF
Specifications of LTC4055EUF#TRPBF
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LTC4055EUF#TRPBF Summary of contents
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... APPLICATIONS n Portable USB Devices: Cameras, MP3 Players, PDAs L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation. PowerPath is a trademark of Linear Technology Corporation. All other trademarks are the property of their respective owners. *Protected by U.S. Patent, including 6522118. TYPICAL APPLICATION 5V (NOM) ...
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... Storage Temperature Range .................. –65°C to 125°C ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL LTC4055EUF#PBF LTC4055EUF#TRPBF LTC4055EUF-1#PBF LTC4055EUF-1#TRPBF Consult LTC Marketing for parts specifi ed with wider operating temperature ranges. Consult LTC Marketing for information on non-standard lead based fi nish parts. ...
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ELECTRICAL CHARACTERISTICS temperature range, otherwise specifi cations are 100k, unless otherwise noted. PROG CLPROG SYMBOL PARAMETER Current Limit I Current Limit LIM R ON Resistance OUT V Programming Pin ...
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LTC4055/LTC4055-1 ELECTRICAL CHARACTERISTICS temperature range, otherwise specifi cations are 100k, unless otherwise noted. PROG CLPROG SYMBOL PARAMETER Logic Output Low Voltage (CHRG, ACPR Enable Input High Voltage IH V Enable Input ...
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TYPICAL PERFORMANCE CHARACTERISTICS Input Supply Current vs Temperature 900 4.2V 800 BAT 100k PROG CLPROG 700 600 500 400 300 200 100 0 –50 – TEMPERATURE ...
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LTC4055/LTC4055-1 TYPICAL PERFORMANCE CHARACTERISTICS Regulated Output Voltage- Recharge Threshold Voltage vs Temperature 120 115 110 105 100 –50 – TEMPERATURE (°C) 4055 G10 Charging from USB, I BAT ...
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TYPICAL PERFORMANCE CHARACTERISTICS Ideal Diode and Schottky Diode Forward Voltage vs Current 1000 V = 3.5V BAT 900 25°C A 800 700 600 500 400 SCHOTTKY 300 200 100 0 300 350 400 0 ...
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LTC4055/LTC4055-1 PIN FUNCTIONS BAT (Pin 2): Connect to a single-cell Li-Ion battery. Used as an output when charging the battery and as an input when supplying power to OUT. When the OUT pin potential drops below the BAT pin potential, ...
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PIN FUNCTIONS TIMER (Pin 12): Timer Capacitor. Placing a capacitor C to GND sets the timer period. The timer period is: C • R TIMER PROG t ( Hours ) = TIMER • μ Charge time ...
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LTC4055/LTC4055-1 BLOCK DIAGRAM DIE TEMP 105°C – – CLPROG 9 CURRENT CONTROL 100k + 1V – PROG 11 100k 500mA/100mA HPWR 8 2μ ACPR 13 WALL + 5 – NTC 15 – 100k 2COLD NTC ...
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OPERATION The LTC4055/LTC4055-1are complete PowerPath control- lers for battery-powered USB applications. The LTC4055/ LTC4055-1 are designed to provide device power and Li-ion battery charging from the USB V BUS the current limits as specifi the USB specifi cation. ...
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LTC4055/LTC4055-1 OPERATION Table 1. Operating Modes—PowerPath States Current Limited Input Power (IN1/IN2 to OUT) WALL PRESENT SHUTDOWN SUSPEND Input ...
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OPERATION LTC4055/LTC4055-1 13 4055fb ...
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LTC4055/LTC4055-1 OPERATION USB CURRENT LIMIT AND CHARGE CURRENT CONTROL The current limit and charger control circuits of the LTC4055/LTC4055-1 are designed to limit input current as well as control battery charge current as a function The programmed ...
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OPERATION exceeding 500mA due to LTC4055/LTC4055-1 tolerances and quiescent currents. This will give a typical current limit of approximately 467mA in high power mode (HPWR = 1) or 92mA in low power mode (HPWR = 0). For best stability over ...
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LTC4055/LTC4055-1 OPERATION where V is the PROG pin voltage and R PROG total resistance from the PROG pin to ground. For example, if typical 485mA charge current is required, calculate • 48 500 100 , = = ...
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OPERATION V LTC4055/LTC4055-1 NTC NTC BLOCK 15 0.74 • V NTC R – NOM 100k NTC + 16 R NTC 100k – 0.29 • V NTC + + – 0.1V (3a) THERMISTORS The LTC4055/LTC4055-1 NTC trip points were designed to ...
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LTC4055/LTC4055-1 OPERATION The nearest 1% value for R is 115k. This is the value NOM used to bias the NTC thermistor to get cold and hot trip points of approximately 0°C and 44°C respectively. To extend the delta between the ...
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OPERATION Selecting WALL Input Resistors The WALL input pin identifi es the presence of a wall adapter. This information is used to disconnect the inputs IN1/IN2 from the OUT pin in order to prevent back conduction to whatever may be ...
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LTC4055/LTC4055-1 OPERATION The LTC4055/LTC4055-1 can be used above 46°C, but the charge current will be reduced below 0.8A. The charge current at a given ambient temperature can be approxi- mated by: 105 C T – ° BAT ...
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TYPICAL APPLICATIONS LTC4055/LTC4055-1 Confi gured for USB Application with Wall Adapter Figure 5 shows an LTC4055/LTC4055-1 confi gured for USB applications with the optional wall adapter input. The programming resistor ( set to 105k which sets CLPROG up ...
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LTC4055/LTC4055-1 TYPICAL APPLICATIONS USB Hosting Application: The LTC4055/LTC4055-1’s IN1 and IN2 are Set Hi-Z by Pulling the SUSP Pin Above 1.2V In applications where the power is required to go back out on to the USB V the LTC4055/LTC4055-1 can ...
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... ON THE TOP AND BOTTOM OF PACKAGE 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. LTC4055/LTC4055-1 UF Package 16-Lead Plastic QFN (4mm × ...
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... Voltage High Effi ciency Li-Ion Battery Charger LTC4089-1 LTC4090/ USB Power Manager with Ideal Diode Controller and High LTC4090-5 Voltage High Effi ciency Li-Ion Battery Charger Bat-Track is a trademark of Linear Technology Corporation. Linear Technology Corporation 24 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 FAX: (408) 434-0507 ● ...