LTC4066EUF#TRPBF Linear Technology, LTC4066EUF#TRPBF Datasheet
LTC4066EUF#TRPBF
Specifications of LTC4066EUF#TRPBF
Available stocks
Related parts for LTC4066EUF#TRPBF
LTC4066EUF#TRPBF Summary of contents
Page 1
... UTQFN package. 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. Patents including 6522118. TO LDOs, ...
Page 2
... JA EXPOSED PAD (PIN #) IS GND, MUST BE SOLDERED TO PCB ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL LTC4066EUF#PBF LTC4066EUF#TRPBF LTC4066EUF-1#PBF LTC4066EUF-1#TRPBF LTC4066EPF#PBF LTC4066EPF#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. ...
Page 3
ELECTRICAL CHARACTERISTICS temperature range, otherwise specifi cations are 2k, unless otherwise noted. CLPROG ISTAT SYMBOL PARAMETER V Input Supply Voltage IN V Input Voltage BAT I Input Supply Current IN I Output Supply Current ...
Page 4
LTC4066/LTC4066-1 ELECTRICAL CHARACTERISTICS temperature range, otherwise specifi cations are 2k, unless otherwise noted. CLPROG ISTAT SYMBOL PARAMETER T Junction Temperature in Constant LIM Temperature Mode Ideal Diode R Incremental Resistance, V Regulation FWD ON ...
Page 5
TYPICAL PERFORMANCE CHARACTERISTICS Input Supply Current vs Temperature 900 4.2V 800 BAT R = 100k PROG 700 CLPROG 600 500 400 300 200 100 0 –50 – ...
Page 6
LTC4066/LTC4066-1 TYPICAL PERFORMANCE CHARACTERISTICS Regulated Output Voltage– Recharge Threshold Voltage vs Temperature 120 115 110 105 100 –50 – TEMPERATURE (°C) 4066 G10 Charging from USB ...
Page 7
TYPICAL PERFORMANCE CHARACTERISTICS I Pin Current vs STAT Battery Current 1500 IDEAL DIODE 1250 1000 750 500 V = 4.2V BAT 250 25° 34k PROG 0 –1500 –1000 –500 I BAT ...
Page 8
LTC4066/LTC4066-1 TYPICAL PERFORMANCE CHARACTERISTICS WALL Connect Waveforms WALL 5V/DIV I IN 0.5A/DIV I WALL 0.5A/DIV I BAT 0.5A/DIV V = 3.85V 1ms/DIV BAT I = 100mA OUT R = 71.5k PROG PIN FUNCTIONS OUT (Pins 1, ...
Page 9
PIN FUNCTIONS SHDN (Pin 12): Shutdown Input. Pulling this pin greater than 1.2V will disable the entire part and place low supply current mode of operation. All power paths will be disabled. A weak pull-down current is ...
Page 10
LTC4066/LTC4066-1 PIN FUNCTIONS CLPROG (Pin 22): Current Limit Program and Input Cur- rent Monitor. Connecting a resistor, R programs the input to output current limit. The current limit is programmed as follows: 1000 ...
Page 11
BLOCK DIAGRAM CURRENT LIMIT DISABLE CLDIS 10 2μ 1000 CURRENT CONTROL CL CLPROG – 22 100k 500mA/100mA HPWR 13 2μ CHG – PROG 23 100k WALL + 20 – 1.25V ACPR 17 V NTC ...
Page 12
... A wall adapter comparator on the LTC4066/LTC4066-1 can be confi gured to detect the presence of the wall adapter and shut off the connec- tion to the USB to prevent reverse conduction out to the USB bus. PowerPath is a trademark of Linear Technology Corporation. CURRENT LIMIT IN CONTROL ENABLE ...
Page 13
OPERATION Table 1. Operating Modes—PowerPath States Current Limited Input Power (IN to OUT) WALL PRESENT SHUTDOWN SUSPEND Battery Charger ...
Page 14
LTC4066/LTC4066-1 OPERATION 14 4066fc ...
Page 15
APPLICATIONS INFORMATION USB Current Limit and Charge Current Control The current limit and charger control circuits of the LTC4066/LTC4066-1 are designed to limit input current as well as control battery charge current as a function of I The programmed input ...
Page 16
LTC4066/LTC4066-1 APPLICATIONS INFORMATION In USB applications, the minimum value for R should be 2.1k. This will prevent the application current from exceeding 500mA due to LTC4066/LTC4066-1 toler- ances and quiescent currents. A 2.1k CLPROG resistor will give a typical current ...
Page 17
APPLICATIONS INFORMATION Battery Charger The battery charger circuits of the LTC4066/LTC4066-1 are designed for charging single cell lithium-ion batter- ies. Featuring an internal P-channel power MOSFET, the charger uses a constant-current/constant-voltage charge algorithm with programmable current and a program- mable ...
Page 18
LTC4066/LTC4066-1 APPLICATIONS INFORMATION Programming Charge Current The formula for the battery charge current is PROG = = I I • 50 000 , CHG PROG R PROG where V is the PROG pin voltage and R PROG ...
Page 19
APPLICATIONS INFORMATION Consider, for example, a USB charge condition where 100k and C CLPROG PROG corresponds to a three hour charge cycle. However, if the HPWR input is set to a logic low, then the ...
Page 20
LTC4066/LTC4066-1 APPLICATIONS INFORMATION NTC Thermistor The battery temperature is measured by placing a negative temperature coeffi cient (NTC) thermistor close to the bat- tery pack. The NTC circuitry is shown in Figure 4. To use this feature, connect the NTC ...
Page 21
APPLICATIONS INFORMATION Power conscious designs may want to use thermistors whose room temperature value is greater than 10k. Vishay Dale has a number of values of thermistor from 10k to 100k that follow the “R-T Curve 2.” Using these directly ...
Page 22
LTC4066/LTC4066-1 APPLICATIONS INFORMATION Any time a battery is connected to the BAT pin and the SHDN pin is low, the BAT pin current can be monitored with the following equation: V ISTAT = I • 1000 BAT R ISTAT where ...
Page 23
APPLICATIONS INFORMATION Current Limit Undervoltage Lockout An internal undervoltage lockout circuit monitors the input voltage and disables the input current limit circuits until V rises above the undervoltage lockout threshold. IN The current limit UVLO circuit has a built-in hysteresis ...
Page 24
LTC4066/LTC4066-1 APPLICATIONS INFORMATION Consider an example where the V TH somewhere around 4.5V. Resistance on the WALL pin should be kept relatively low (~10k) in order to prevent false tripping of the wall comparator due to leakages as- sociated with ...
Page 25
APPLICATIONS INFORMATION to make thermal contact between the Exposed Pad on the backside of the package and the copper board will result in thermal resistances far greater than 37°C/ example, a correctly soldered LTC4066/LTC4066-1 can deliver over 1A ...
Page 26
LTC4066/LTC4066-1 PACKAGE DESCRIPTION 4.50 0.05 2.45 0.05 (4 SIDES) 3.10 0.05 RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS 4.00 0.10 (4 SIDES) PIN 1 TOP MARK (NOTE 6) NOTE: 1. DRAWING PROPOSED TO BE MADE A JEDEC PACKAGE OUTLINE MO-220 VARIATION ...
Page 27
... 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. PF Package 24-Lead Plastic UTQFN (4mm × ...
Page 28
... DC/DC Converter LTC3455 Dual DC/DC Converter with USB Power Manager and Li-Ion Battery Charger LTC4055 USB Power Controller and Battery Charger ThinSOT is a trademark of Linear Technology Corporation. Linear Technology Corporation 28 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 FAX: (408) 434-0507 ● ...