LTC1514-5 Linear Technology, LTC1514-5 Datasheet
LTC1514-5
Related parts for LTC1514-5
LTC1514-5 Summary of contents
Page 1
... DC/DC converters that produce a regulated output voltage by either stepping up or stepping down the input voltage. Output voltage is fixed at either 3.3V (LTC1514-3. (LTC1514- internal resistor divider. A unique architecture allows the parts to accommodate a wide input voltage range (2V to 10V) while maintaining IN 4% regulation ...
Page 2
... U RATINGS PACKAGE/ORDER SHDN 1 LBO 2 LBI 3 GND 4 8-LEAD PLASTIC SO T JMAX Consult factory for Military grade parts unless otherwise noted (Note 2). IN OUT CONDITIONS LTC1514-3.3 LTC1514 8V, I 15mA IN OUT 3V V 8V, I 50mA IN OUT 2.7V V 10V, I 15mA IN OUT 3.3V V 10V, I 50mA IN OUT V ...
Page 3
... V = 3.3V OUT 4. 2. 0.01 0 100 OUTPUT CURRENT (mA) 1514 G01 LTC1514-5 Output Voltage Ripple vs Input Voltage 250 OUT I = 10mA OUT 200 OUT 150 OUT 100 OUT ...
Page 4
... LBI (Pin 3): Low-Battery Comparator Input. The voltage quiescent IN on this pin is compared to the internal reference voltage if IN (1.145V). The LBO output will sink current when the voltage on the LBI pin is less than 1.145V typ. The low- LTC1514-5 Step-Up Mode Load Transient Response OUT OUT V = 3.3V 5V ...
Page 5
... By enabling the charge pump only when needed, the LTC1514-3.3 and LTC1514-5 are able to achieve high efficiencies with low output load currents. Each part’s charge pump has a unique architecture that allows the input voltage to be either stepped up or stepped down to produce a regulated output ...
Page 6
... Only the effective charge pump output impedance limits the current while the charge pump is enabled. This may disrupt input supply regulation, espe- cially if the input supply is a low power DC/DC converter or linear regulator. The LTC1514-3.3/LTC1514-5 mini- mize inrush currents both at start-up and under normal high operation ...
Page 7
... LTC1514 SHDN V OUT 2 7 LBO LBI C1 0.22 F CHARGE PATH 4 5 – + GND LTC1514-3.3/LTC1514 3.3V 4% OUT I = 15mA, V > 2V OUT 50mA, V > OUT 1514 TA05 BACKED-UP CIRCUITRY BAT54 TRICKLE CHARGE AND LTC1514 I DD ...
Page 8
... 1514 TA04 4 AAA ALKALINE CELLS EXT_PWR_GOOD OUT OUT 50mA LTC1514 0. 10V – C1 GND 4 1514 TA07 0.189 – 0.197* (4.801 – 5.004 0.150 – 0.157** 0.228 – 0.244 (3.810 – 3.988) (5.791 – 6.197) ...