LTC2950 LINER [Linear Technology], LTC2950 Datasheet
LTC2950
Available stocks
Related parts for LTC2950
LTC2950 Summary of contents
Page 1
FEATURES ■ Adjustable Push Button Debounce and Delay Timers Low Supply Current: 6µA ■ ■ Wide Operating Voltage Range: 2.7V to 26V EN Output (LTC2951-1) Allows DC/DC Converter ■ Control ⎯ E ⎯ N Output (LTC2951-2) Allows Circuit Breaker ■ ...
Page 2
LTC2951 ABSOLUTE AXI U RATI GS (Note 1) Supply Voltage (V ) ..................................– 0.3V to 33V IN Input Voltages ⎯ P ⎯ B ............................................................– 33V KILLT ....................................................– 0.3V to 2.7V OFFT .....................................................– 0.3V to 2.7V ...
Page 3
ELECTRICAL CHARACTERISTICS temperature range, otherwise specifi cations are at T SYMBOL PARAMETER Push Button Pin ( ⎯ P ⎯ ⎯ P ⎯ B Voltage Range V ⎯ P ⎯ B (MIN, MAX) ⎯ P ⎯ B Input Current ...
Page 4
LTC2951 W U TYPICAL PERFOR A CE CHARACTERISTICS Supply Current vs Temperature 26 –50 – 100 TEMPERATURE (°C) 2951 ...
Page 5
W U TYPICAL PERFOR A CE CHARACTERISTICS ⎯ P ⎯ B Current vs ⎯ P ⎯ B Voltage –250 –200 –150 –100 –50 0 –10 – VOLTAGE (V) EN/ ⎯ E ⎯ Current Load ...
Page 6
LTC2951 CTIO S (TSOT-23/DFN) V (Pin 1/Pin 4): Power Supply Input: 2.7V to 26.4V. IN ⎯ P ⎯ B (Pin 2/Pin 3): Push Button Input. Connecting ⎯ P ⎯ ground through a momentary ...
Page 7
W BLOCK DIAGRA V IN REGULATOR 2.7V TO 26.4V 2.4V 100k PB 0.8V GND DIAGRA S 2.4V OSCILLATOR LOGIC DEBOUNCE OSCILLATOR KILLT t KILL(PW) KILL t KILL(PD) EN/EN LTC2951 0.6V 2951 BD OFFT 2951 ...
Page 8
LTC2951 DIAGRA S (LTC2951-1) (LTC2951-2) PB OFFT INT KILLT EN (LTC2951-1) EN (LTC2951- & KILL IGNORED t t DB, ON KILL, ON BLANK EN EN Power On Timing PB IGNORED t ...
Page 9
U U APPLICATIO S I FOR ATIO Description The LTC2951 is a low power (6µA), wide input voltage range (2.7V to 26.4V), push button On/Off controller that can interface to a µP and a power supply. The part incorporates all ...
Page 10
LTC2951 U U APPLICATIO S I FOR ATIO DB, ON OFFT INT KILL EN Figure 1. Simplifi ed Power On/Off Sequence for LTC2951-1 POWER ON TIMING KILL ...
Page 11
U U APPLICATIO S I FOR ATIO and ⎯ K ⎯ I ⎯ L ⎯ L (for a turnoff command) while consuming only 6µA of supply current. A high to low transition on ⎯ P ⎯ off sequence. ...
Page 12
LTC2951 U U APPLICATIO S I FOR ATIO High Voltage Pins and ⎯ P ⎯ B pins can operate at voltages up to 26.4V. The V IN ⎯ P ⎯ B can, additionally, operate below ground (–6V) without latching up ...
Page 13
U TYPICAL APPLICATIO S Power Path Switching The ⎯ E ⎯ N open drain output of the LTC2951-2 is designed to switch on/off an external power PFET. This allows a user to connect/disconnect a power supply (or battery) to its ...
Page 14
LTC2951 U TYPICAL APPLICATIO S External Pull-Up Resistor on ⎯ P ⎯ internal pull-up resistor on the ⎯ P ⎯ B pin makes an ex- ternal pull-up resistor unnecessary. Leakage current on the ⎯ P ⎯ B board ...
Page 15
PACKAGE DESCRIPTIO 0.61 ±0.05 (2 SIDES) 0.675 ±0.05 2.50 ±0.05 1.15 ±0.05 0.25 ± 0.05 0.50 BSC 2.20 ±0.05 (2 SIDES) RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS NOTE: 1. DRAWING CONFORMS TO VERSION (WECD-1) IN JEDEC PACKAGE OUTLINE M0-229 2. ...
Page 16
... BATTERY RELATED PARTS PART NUMBER DESCRIPTION LTC2900 Programmable Quad Supply Monitor LTC2904/2905 Pin-Programmable Dual Supply Monitors LTC2950 Micropower Push Button On/Off Controller LTC4411 2.6A Low Loss Ideal Diode in ThinSOT LTC4412HV Power Path Controller in ThinSOT LTC4055 USB Power Controller and Li-Ion Charger Linear Technology Corporation 16 1630 McCarthy Blvd ...