Datasheet LT3502, LT3502A (Analog Devices) - 7
| Hersteller | Analog Devices |
| Beschreibung | 1.1MHz/2.2MHz, 500mA Step-Down Regulators in 2mm × 2mm DFN and MS10 |
| Seiten / Seite | 24 / 7 — pin Functions (DFN/MS). VIN (Pin 1/Pin 10):. GND (Pin 5/Pin 5):. DA (Pin … |
| Dateiformat / Größe | PDF / 466 Kb |
| Dokumentensprache | Englisch |
pin Functions (DFN/MS). VIN (Pin 1/Pin 10):. GND (Pin 5/Pin 5):. DA (Pin 6/Pin 4):. BD (Pin 2/Pin 8):. BOOST (Pin 7/Pin 2):
Modelllinie für dieses Datenblatt
- LT3502AEDC#PBF LT3502AEDC#TRMPBF LT3502AEDC#TRPBF LT3502AEMS#PBF LT3502AEMS#TRPBF LT3502AIDC#PBF LT3502AIDC#TRMPBF LT3502AIDC#TRPBF LT3502AIMS#PBF LT3502AIMS#TRPBF LT3502EDC#PBF LT3502EDC#TRMPBF LT3502EDC#TRPBF LT3502EMS#PBF LT3502EMS#TRPBF LT3502IDC#PBF LT3502IDC#TRMPBF LT3502IDC#TRPBF LT3502IMS#PBF LT3502IMS#TRPBF
Textversion des Dokuments
LT3502/LT3502A
pin Functions (DFN/MS) VIN (Pin 1/Pin 10):
The VIN pin supplies current to the
GND (Pin 5/Pin 5):
Ground Pin. LT3502/LT3502A’s internal regulator and to the internal
DA (Pin 6/Pin 4):
Connect the catch diode (D1) anode to power switch. This pin must be locally bypassed. this pin. This pin is used to provide frequency foldback
BD (Pin 2/Pin 8):
The BD pin is used to provide current in extreme situations. to the internal boost Schottky diode.
BOOST (Pin 7/Pin 2):
The BOOST pin is used to provide a
FB (Pin 3/Pin 7):
The LT3502/LT3502A regulate their drive voltage, higher than the input voltage, to the internal feedback pin to 0.8V. Connect the feedback resistor di- bipolar NPN power switch. Connect a boost capacitor from vider tap to this pin. Set the output voltage according to this pin to SW Pin. VOUT = 0.8 (1 + R1/R2). A good value for R2 is 10k.
SW (Pin 8/Pin 1):
The SW pin is the output of the internal
SHDN (Pin 4/Pin 6):
The SHDN pin is used to put the power switch. Connect this pin to the inductor, catch diode LT3502 in shutdown mode. Tie to ground to shut down and boost capacitor. the LT3502/LT3502A. Tie to 2V or more for normal operation. If the shutdown feature is not used, tie this pin to the VIN pin. The SHDN pin also provides soft-start and frequency foldback. To use the soft-start feature, connect R3 and C4 to the SHDN pin. SHDN Pin voltage should not be higher than VIN. 3502fd 7 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Typical Application Related Parts
pin Functions (DFN/MS) VIN (Pin 1/Pin 10):
The VIN pin supplies current to the
GND (Pin 5/Pin 5):
Ground Pin. LT3502/LT3502A’s internal regulator and to the internal
DA (Pin 6/Pin 4):
Connect the catch diode (D1) anode to power switch. This pin must be locally bypassed. this pin. This pin is used to provide frequency foldback
BD (Pin 2/Pin 8):
The BD pin is used to provide current in extreme situations. to the internal boost Schottky diode.
BOOST (Pin 7/Pin 2):
The BOOST pin is used to provide a
FB (Pin 3/Pin 7):
The LT3502/LT3502A regulate their drive voltage, higher than the input voltage, to the internal feedback pin to 0.8V. Connect the feedback resistor di- bipolar NPN power switch. Connect a boost capacitor from vider tap to this pin. Set the output voltage according to this pin to SW Pin. VOUT = 0.8 (1 + R1/R2). A good value for R2 is 10k.
SW (Pin 8/Pin 1):
The SW pin is the output of the internal
SHDN (Pin 4/Pin 6):
The SHDN pin is used to put the power switch. Connect this pin to the inductor, catch diode LT3502 in shutdown mode. Tie to ground to shut down and boost capacitor. the LT3502/LT3502A. Tie to 2V or more for normal operation. If the shutdown feature is not used, tie this pin to the VIN pin. The SHDN pin also provides soft-start and frequency foldback. To use the soft-start feature, connect R3 and C4 to the SHDN pin. SHDN Pin voltage should not be higher than VIN. 3502fd 7 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Typical Application Related Parts