Datasheet LTC3834 (Analog Devices) - 9
| Manufacturer | Analog Devices |
| Description | 30μA IQ Synchronous Step-Down Controller |
| Pages / Page | 30 / 9 — PIN FUNCTIONS (FE/UFD). Exposed Pad (Pin 21/Pin 21):. PHASMD (Pin 20/Pin … |
| File Format / Size | PDF / 793 Kb |
| Document Language | English |
PIN FUNCTIONS (FE/UFD). Exposed Pad (Pin 21/Pin 21):. PHASMD (Pin 20/Pin 18):. FUNCTIONAL DIAGRAM
Model Line for this Datasheet
Text Version of Document
LTC3834
PIN FUNCTIONS (FE/UFD)
operation. Tying this pin to a voltage greater than 0.9V
Exposed Pad (Pin 21/Pin 21):
SGND. Must be soldered and less than INTVCC selects pulse-skipping operation. to the PCB.
PHASMD (Pin 20/Pin 18):
Control Input to Phase Selector which determines the phase relationships between TG and the CLKOUT signal.
FUNCTIONAL DIAGRAM
PLLIN/ MODE FIN PHASE DET INTVCC VIN PHASMD D BOOST B R PLLLPF LP CLP TG CB CLK DROP TOP OUT CIN OSCILLATOR D INTVCC DET BOT FC SW TOP ON 10k S Q CLKOUT – 0.88V SWITCH INTV R Q LOGIC CC + BG BOT PGOOD VFB1 – BURSTEN C PGND OUT B + 0.72V 0.4V + SLEEP VOUT – SHDN RSENSE L INTVCC – 0.5V – FC + ICMP IR + – PLLIN/MODE – – + + – BURSTEN – + 0.8V + 6mV 0.45V SENSE+ 2(VFB) SENSE– SLOPE COMP VFB R V B FB – TRACK/SS V EA IN + 0.80V RA VIN OV + 4.7V + 5.25V/ – – 7.5V 0.88V C EXTV I C CC LDO TH 0.5µA C R C2 C INTVCC 6V 1µA + TRACK/SS INTERNAL RUN SGND SUPPLY SHDN CSS 3834 FD 3834fc For more information www.linear.com/LTC3834 9 Document Outline Features Description Applications Typical Application Absolute Maximum Ratings Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Operation Package Description Typical Application Related Parts
PIN FUNCTIONS (FE/UFD)
operation. Tying this pin to a voltage greater than 0.9V
Exposed Pad (Pin 21/Pin 21):
SGND. Must be soldered and less than INTVCC selects pulse-skipping operation. to the PCB.
PHASMD (Pin 20/Pin 18):
Control Input to Phase Selector which determines the phase relationships between TG and the CLKOUT signal.
FUNCTIONAL DIAGRAM
PLLIN/ MODE FIN PHASE DET INTVCC VIN PHASMD D BOOST B R PLLLPF LP CLP TG CB CLK DROP TOP OUT CIN OSCILLATOR D INTVCC DET BOT FC SW TOP ON 10k S Q CLKOUT – 0.88V SWITCH INTV R Q LOGIC CC + BG BOT PGOOD VFB1 – BURSTEN C PGND OUT B + 0.72V 0.4V + SLEEP VOUT – SHDN RSENSE L INTVCC – 0.5V – FC + ICMP IR + – PLLIN/MODE – – + + – BURSTEN – + 0.8V + 6mV 0.45V SENSE+ 2(VFB) SENSE– SLOPE COMP VFB R V B FB – TRACK/SS V EA IN + 0.80V RA VIN OV + 4.7V + 5.25V/ – – 7.5V 0.88V C EXTV I C CC LDO TH 0.5µA C R C2 C INTVCC 6V 1µA + TRACK/SS INTERNAL RUN SGND SUPPLY SHDN CSS 3834 FD 3834fc For more information www.linear.com/LTC3834 9 Document Outline Features Description Applications Typical Application Absolute Maximum Ratings Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Operation Package Description Typical Application Related Parts
