ltc4076 Linear Technology Corporation, ltc4076 Datasheet
ltc4076
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ltc4076 Summary of contents
Page 1
... The LTC4076 can be put into shutdown mode reducing the DCIN supply current to 20µA, the USBIN supply current to 10µA, and the battery drain current to less than 2µ ...
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... C to 125 C ORDER PART NUMBER LTC4076EDD Order Options Tape and Reel: Add #TR Lead Free: Add #PBF Lead Free Tape and Reel: Add #TRPBF Lead Free Part Marking: Consult LTC Marketing for parts specified with wider operating temperature ranges. ...
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... Maximum Rating condition for extended periods may affect device reliability and lifetime. Note 2: The LTC4076E is guaranteed to meet the performance specifications from 0°C to 85°C. Specifications over the –40°C to 85°C operating temperature range are assured by design, characterization and correlation with statistical process controls ...
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... LTC4076 TYPICAL PERFOR A CE CHARACTERISTICS W U Regulated Output (Float) Voltage vs Charge Current 4. DCIN USBIN 4.24 4.22 4.20 4.18 4. 1.25k IDC IDC IUSB 4.14 4.12 4.10 0 100 200 300 400 500 600 700 CHARGE CURRENT (mA) 4076 G01 IUSB Pin Voltage vs Temperature (Constant-Current Mode) 1.008 HPWR = 5V 1.006 1.004 1 ...
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... HPWR Pin Threshold (Rising) vs Temperature 900 DCIN USBIN 850 800 750 700 650 600 100 –50 – TEMPERATURE (°C) LTC4076 Charge Current vs Supply Voltage 900 THERMAL REGULATION 800 700 600 500 R = 1.25k IDC 400 BAT θ = 35°C/W JA 300 100 125 4 ...
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... LTC4076 TYPICAL PERFOR A CE CHARACTERISTICS W U USBIN Shutdown Current vs Temperature USBIN USBIN 4.3V USBIN –50 – 100 TEMPERATURE (°C) 4076 G17 Undervoltage Lockout Threshold vs Temperature 4.30 4.25 DCIN UVLO 4.20 4.15 4.10 4.05 USBIN UVLO 4.00 3.95 3.90 –50 – TEMPERATURE (°C) ...
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... LED. C H R G (Pin 5): Open-Drain Charge Status Output. When the LTC4076 is charging, the C H R G pin is pulled low by an internal N-channel MOSFET. When the charge cycle is completed, C H R G becomes high impedance. This output ...
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... LTC4076 BLOCK DIAGRA W DCIN 10 HPWR 7 R HPWR 10mA MAX 4 PWR 10mA MAX CHRG 5 RECHARGE LOGIC RECHRG TRICKLE TERM TERMINATION 8 CC/CV REGULATOR + DC – 4.15V SOFT-START DCIN UVLO + – BAT + 4.1V – BAT DC_ENABLE – TRICKLE CHARGER CONTROL CHARGE 2. 100mV I /1000 I /1000 BAT BAT – ...
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... Power Source Selection The LTC4076 can charge a battery from either the wall adapter input or the USB port input. The LTC4076 automati- cally senses the presence of voltage at each input. If both power sources are present, the LTC4076 defaults to the wall adapter source provided suffi ...
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... LTC4076 charge cycle. Once the charge cycle has terminated or the LTC4076 is disabled, the pin state becomes high impedance. The pull-down state is capable of sinking up to 10mA. *Any external sources that hold the ITERM pin above 100mV will prevent the LTC4076 from terminating a charge cycle. . 4076fa ...
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... DCIN POWER APPLIED EN EN DRIVEN HIGH DRIVEN HIGH USBIN POWER DCIN POWER REMOVED OR REMOVED DCIN POWER Figure 1. LTC4076 State Diagram of a Charge Cycle LTC4076 TRICKLE CHARGE MODE BAT < 2.9V 1/10th FULL CURRENT CHRG STATE: PULLDOWN BAT > 2.9V CHARGE 2.9V < BAT MODE FULL CURRENT⇒HPWR = HIGH 1/5 FULL CURRENT⇒ ...
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... ADAPTER USB PORT The LTC4076 can also program the wall adapter charge current and USB charge current independently using two program resistors, R charger circuit that sets the wall adapter charge current to 800mA and the USB charge current to 500mA. Stability Considerations ...
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... V ) • BAT BAT Example: An LTC4076 operating from a 5V wall adapter (on the DCIN input) is programmed to supply 800mA full-scale current to a discharged Li-Ion battery with a voltage of 3.3V. Assuming θ is 40°C/W (see Thermal Considerations), JA the ambient temperature at which the LTC4076 will begin ...
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... Q characteristics of ceramic capacitors can cause substantial ringing which could exceed the maximum voltage ratings and damage the LTC4076. Refer to Linear Technology Application Note 88, entitled “Ceramic Input Capacitors Can Cause Overvoltage Transients” for a detailed discussion of this problem. ...
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... U DD Package 10-Lead Plastic DFN (3mm × 3mm) (Reference LTC DWG # 05-08-1699) 0.675 ±0.05 PIN 1 PACKAGE TOP MARK OUTLINE (SEE NOTE 6) 0.200 REF LTC4076 R = 0.115 0.38 ± 0.10 TYP 6 10 1.65 ± 0.10 3.00 ±0.10 (4 SIDES) (2 SIDES 0.25 ± ...
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... LTC4076 RELATED PARTS PART NUMBER DESCRIPTION LTC3455 Dual DC/DC Converter with USB Power Management and Li-Ion Battery Charger LTC4053 USB Compatible Monolithic Li-Ion Battery Charger LTC4054/LTC4054X Standalone Linear Li-Ion Battery Charger with Integrated Pass Transistor in ThinSOT LTC4055 USB Power Controller and Battery Charger ...