 |
Electronic Components Datasheet Search |
|
|
Electronic Components Datasheet Search |
|
LTC3129 Datasheet(PDF) 3 Page - Linear Technology |
|
|
|||||||||||||||||||||||||||||
LTC3129 Datasheet(HTML) 3 Page - Linear Technology |
|
|
3 / 30 page  LTC3129 3 3129fc For more information www.linear.com/LTC3129 elecTrical characTerisTics The l denotes the specifications which apply over the specified operating junction temperature range, otherwise specifications are at TA = 25°C (Note 2). Unless otherwise noted, VIN = 12V, VOUT = 5V. PARAMETER CONDITIONS MIN TYP MAX UNITS VIN Start-Up Voltage l 2.25 2.42 V Input Voltage Range VCC > 2.42V (Back-Driven) l 1.92 15 V VIN UVLO Threshold (Rising) VCC > 2.42V (Back-Driven) l 1.8 1.9 2.0 V VIN UVLO Hysteresis l 80 100 130 mV Output Voltage Adjust Range l 1.4 15.75 V Feedback Voltage l 1.151 1.175 1.199 V Feedback Input Current FB = 1.25V 0.1 10 nA Quiescent Current (VIN) – Shutdown RUN = 0V, Including Switch Leakage 10 100 nA Quiescent Current (VIN) UVLO Either VIN or VCC Below Their UVLO Threshold, or RUN Below the Threshold to Enable Switching 1.9 3 µA Quiescent Current – Burst Mode Operation Measured on VIN, FB > 1.25V PWM = 0V, RUN = VIN 1.3 2.0 µA N-Channel Switch Leakage on VIN and VOUT SW1 = 0V, VIN = 15V SW2 = 0V, VOUT = 15V RUN = 0V 10 50 nA N-Channel Switch On-Resistance VCC = 4V 0.75 Ω Inductor Average Current Limit VOUT > UV Threshold (Note 4) VOUT < UV Threshold (Note 4) l l 220 80 275 130 350 200 mA mA Inductor Peak Current Limit (Note 4) l 400 500 680 mA Maximum Boost Duty Cycle FB = 1.10V. Percentage of Period SW2 is Low in Boost Mode (Note 7) l 85 89 95 % Minimum Duty Cycle FB = 1.25V. Percentage of Period SW1 is High in Buck Mode (Note 7) l 0 % Switching Frequency PWM = VCC l 1.0 1.2 1.4 MHz SW1 and SW2 Minimum Low Time (Note 3) 90 ns MPPC Voltage l 1.12 1.175 1.22 V MPPC Input Current MPPC = 5V 1 10 nA RUN Threshold to Enable VCC l 0.5 0.9 1.15 V RUN Threshold to Enable Switching (Rising) VCC > 2.4V l 1.16 1.22 1.28 V RUN (Switching) Threshold Hysteresis 50 80 120 mV RUN Input Current RUN = 15V 1 10 nA PWM Input High l 1.6 V PWM Input Low l 0.5 V PWM Input Current PWM = 5V 0.1 1 µA Soft-Start Time 3 ms VCC Voltage VIN > 4.85V l 3.4 4.1 4.7 V VCC Dropout Voltage (VIN – VCC) VIN = 3.0V, Switching VIN = 2.0V (VCC in UVLO) 35 0 60 2 mV mV VCC UVLO Threshold (Rising) l 2.1 2.25 2.42 V VCC UVLO Hysteresis 60 mV VCC Current Limit VCC = 0V l 4 20 60 mA VCC Back-Drive Voltage (Maximum) l 5.5 V VCC Input Current (Back-Driven) VCC = 5.5V (Switching) 2 4 mA VCC Leakage to VIN if VCC > VIN VCC = 5.5V, VIN = 1.8V, Measured on VIN –27 µA VOUT UV Threshold (Rising) l 0.95 1.15 1.35 V |
|
Link URL |
| Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Contact us | Privacy Policy | Link to Datasheet | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
| Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
|
Family Site : ic2ic.com |
icmetro.com |
English ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
