Electronic Components Datasheet Search
  English  ▼
ALLDATASHEET.COM

X  

LTC1871-7 Datasheet(PDF) 10 Page - Linear Technology

Part # LTC1871-7
Description  PolyPhase Synchronous Boost Controller
Download  36 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC1871-7 Datasheet(HTML) 10 Page - Linear Technology

Back Button LTC1871-7 Datasheet HTML 6Page - Linear Technology LTC1871-7 Datasheet HTML 7Page - Linear Technology LTC1871-7 Datasheet HTML 8Page - Linear Technology LTC1871-7 Datasheet HTML 9Page - Linear Technology LTC1871-7 Datasheet HTML 10Page - Linear Technology LTC1871-7 Datasheet HTML 11Page - Linear Technology LTC1871-7 Datasheet HTML 12Page - Linear Technology LTC1871-7 Datasheet HTML 13Page - Linear Technology LTC1871-7 Datasheet HTML 14Page - Linear Technology Next Button
Zoom Inzoom in Zoom Outzoom out
 10 / 36 page
background image
LTC3787
10
3787fc
PIN FUNCTIONS (QFN/SSOP)
SS (Pin 7/Pin 10): Output Soft-Start Input. A capacitor to
ground at this pin sets the ramp rate of the output voltage
during start-up.
SENSE2, SENSE1(Pin 8, Pin 28/Pin 11, Pin 3):
Nega-
tive Current Sense Comparator Input. The (–) input to the
current comparator is normally connected to the negative
terminal of a current sense resistor connected in series
with the inductor.
SENSE2+, SENSE1+ (Pin 9, Pin 27/Pin 12, Pin 2):
Posi-
tive Current Sense Comparator Input. The (+) input to the
current comparator is normally connected to the positive
terminal of a current sense resistor. The current sense resis-
tor is normally placed at the input of the boost controller in
series with the inductor. This pin also supplies power to the
current comparator. The common mode voltage range on
SENSE+ and SENSEpins is 2.5V to 38V (40V abs max).
VFB (Pin 10/Pin 13): Error Amplifier Feedback Input. This
pin receives the remotely sensed feedback voltage from
an external resistive divider connected across the output.
ITH (Pin 11/Pin 14): Current Control Threshold and Error
Amplifier Compensation Point. The voltage on this pin sets
the current trip threshold.
NC (Pin 12/Pin 15): No Connect.
SW2, SW1 (Pin 13, Pin 24/Pin 16, Pin 27): Switch Node.
Connect to the source of the synchronous N-channel
MOSFET, the drain of the main N-channel MOSFET and
the inductor.
TG2, TG1 (Pin 14, Pin 23/Pin 17, Pin 26): Top Gate. Con-
nect to the gate of the synchronous N-channel MOSFET.
BOOST2, BOOST1 (Pin 15, Pin 22/Pin 18, Pin 25): Float-
ing power supply for the synchronous N-channel MOSFET.
Bypass to SW with a capacitor and supply with a Schottky
diode connected to INTVCC.
PGND (Pin 19/Pin 22): Driver Power Ground. Connects
to the sources of bottom (main) N-channel MOSFETs and
the (–) terminal(s) of CIN and COUT.
BG2, BG1 (Pin 16, Pin 21/Pin 19, Pin 24): Bottom Gate.
Connect to the gate of the main N-channel MOSFET.
INTVCC (Pin 17/Pin 20): Output of Internal 5.4V LDO.
Power supply for control circuits and gate drivers. De-
couple this pin to GND with a minimum 4.7μF low ESR
ceramic capacitor.
EXTVCC (Pin 18/Pin 21): External Power Input. When this
pin is between 4.8V and 6V, an internal switch bypasses
the internal regulator and supply power to INTVCC directly
from EXTVCC. Do not float this pin. It can be connected to
ground when not used.
VBIAS (Pin 20/Pin 23): Main Supply Pin. It is normally
tied to the input supply VIN or to the output of the boost
converter. A bypass capacitor should be tied between this
pin and the signal ground pin. The operating voltage range
on this pin is 4.5V to 38V (40V abs max).
PGOOD (Pin 25/Pin 28): Power Good Indicator. Open-drain
logic output that is pulled to ground when the output volt-
age is more than ±10 % away from the regulated output
voltage. To avoid false trips the output voltage must be
outside the range for 25μs before this output is activated.
ILIM (Pin 26/Pin 1): Current Comparator Sense Voltage
Range Input. This pin is used to set the peak current
sense voltage in the current comparator. Connect this pin
to SGND, open, and INTVCC to set the peak current sense
voltage to 50mV, 75mV and 100mV, respectively.
GND (Exposed Pad Pin 29) UFD Package: Ground. Must
be soldered to the PCB for rated thermal performance.


Similar Part No. - LTC1871-7

ManufacturerPart #DatasheetDescription
logo
Linear Technology
LTC1871-7 LINER-LTC1871-7 Datasheet
455Kb / 32P
   High Input Voltage,Current Mode Boost, Flyback and SEPIC Controller
LTC1871-7 LINER-LTC1871-7 Datasheet
392Kb / 28P
   High Effi ciency, Synchronous, 4-Switch Buck-Boost Controller
LTC1871-7 LINER-LTC1871-7 Datasheet
477Kb / 36P
   Wide Input Range, No RSENSE Current Mode Boost, Flyback and SEPIC Controller
LTC1871-7 LINER-LTC1871-7 Datasheet
764Kb / 32P
   Wide Input Range, No RSENSE??Current Mode Boost, Flyback and SEPIC Controller
LTC1871-7 LINER-LTC1871-7 Datasheet
302Kb / 20P
   No RSENSE Current Mode Boost DC/DC Controller
More results

Similar Description - LTC1871-7

ManufacturerPart #DatasheetDescription
logo
Linear Technology
LTC3787 LINER-LTC3787_15 Datasheet
372Kb / 36P
   PolyPhase Synchronous Boost Controller
LTC3784 LINER-LTC3784_15 Datasheet
523Kb / 38P
   60V PolyPhase Synchronous Boost Controller
LTC3784 LINER-LTC3784 Datasheet
523Kb / 38P
   60V PolyPhase Synchronous Boost Controller
logo
Analog Devices
LTC7841 AD-LTC7841 Datasheet
1Mb / 48P
   PolyPhase Synchronous Boost Controller with PMBus Interface
logo
Shenzhen Huazhimei Semi...
HM5174 HMSEMI-HM5174 Datasheet
968Kb / 12P
   SYNCHRONOUS BOOST CONTROLLER
logo
Rohm
BD8303MUV ROHM-BD8303MUV_15 Datasheet
1Mb / 27P
   Synchronous Buck-Boost Controller
logo
Linear Technology
LTC1629-6 LINER-LTC1629-6 Datasheet
300Kb / 28P
   PolyPhase, Synchronous
logo
Feeling Technology Corp...
FP5202 FEELING-FP5202 Datasheet
342Kb / 10P
   Non-Synchronous PWM Boost Controller
logo
Linear Technology
LT3762 LINER-LT3762 Datasheet
2Mb / 34P
   60V Synchronous Boost LED Controller
logo
Texas Instruments
LM5122 TI1-LM5122_16 Datasheet
2Mb / 49P
[Old version datasheet]   Wide-Input Synchronous Boost Controller
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36


Datasheet Download

Go To PDF Page


Link URL




Privacy Policy
ALLDATASHEET.COM
Does ALLDATASHEET help your business so far?  [ DONATE ] 

About Alldatasheet   |   Advertisement   |   Datasheet Upload   |   Contact us   |   Privacy Policy   |   Link Exchange   |   Manufacturer List
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
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