LM3485MM/NOPB National Semiconductor, LM3485MM/NOPB Datasheet - Page 14

• Manufacturer Part Number: LM3485MM/NOPB
• Description: IC CONTROLLER PFET 8-MSOP
• Manufacturer: National Semiconductor
• Type: Step-Down (Buck)r

Specifications of LM3485MM/NOPB

• Internal Switch(s): No
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Voltage - Output: 1.24 ~ 35 V
• Current - Output: 4A
• Voltage - Input: 4.5 ~ 35 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 8-MSOP, Micro8™, 8-uMAX, 8-uSOP,
• Power - Output: 417mW
• Dc To Dc Converter Type: Buck Controller
• Pin Count: 8
• Input Voltage: 4.5 to 35V
• Output Voltage: 1.242 to 35V
• Output Current: 4A
• Package Type: MSOP
• Mounting: Surface Mount
• Operating Temperature Classification: Automotive
• Operating Temperature (min): -40C
• Operating Temperature (max): 125C
• For Use With: LM3485LED EVAL - BOARD EVALUATION LM3485LEDLM3485EVAL - BOARD EVALUATION LM3485
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Frequency - Switching: -
• Lead Free Status / Rohs Status: Compliant
• Other names: LM3485MM; LM3485MMTR

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C1: C
C2: C
C3: C
C4: C
D1: 1A/40V MBRS140T3 (On Semiconductor)
L1: 22µH :QH66SN220M01L (Murata)
Q1: FDC5614P (Fairchild)
R1: 33KΩ Chip Resistor
R2: 20KΩ Chip Resistor
R3: R
IN
OUT
ADJ
FF
ADJ
22µF/35V EEJL1VD226R (Panasonic)
100pF Ceramic Chip Capacitor
1nF Ceramic Chip Capacitor
24KΩ Chip Resistor
100µF/6.3V 6TPC100M (Sanyo)
FIGURE 7. Typical PCB Layout (3.3V Output)
Silk Screen
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