LM2597M-3.3/NOPB National Semiconductor, LM2597M-3.3/NOPB Datasheet - Page 32

• Manufacturer Part Number: LM2597M-3.3/NOPB
• Description: IC REG SIMPLE SWITCHER 8-SOIC
• Manufacturer: National Semiconductor
• Series: SIMPLE SWITCHER®r
• Type: Step-Down (Buck)r

Specifications of LM2597M-3.3/NOPB

• Internal Switch(s): Yes
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Voltage - Output: 3.3V
• Current - Output: 500mA
• Frequency - Switching: 150kHz
• Voltage - Input: 4.5 ~ 40 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width)
• Output Current: 500mA
• Output Voltage: 3.3V
• No. Of Outputs: 1
• Supply Voltage Range: 4.5V To 40V
• No. Of Pins: 8
• Operating Temperature Range: -40°C To +125°C
• Primary Input Voltage: 12V
• Rohs Compliant: Yes
• Termination Type: SMD
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power - Output: -
• Other names: *LM2597M-3.3; *LM2597M-3.3/NOPB; LM2597M-3.3

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Application Information
C
C
D1
L1
C
C
R3
C
C
D1
L1
C
C
CFF
R1
R2
R3
IN
OUT
SS
D
IN
OUT
SS
D
— Surface Mount Inductor, Coilcraft DO33
— Surface Mount Inductor, Coilcraft DO33
— 1A, 40V Surface Mount Schottky Rectifier
— Error Flag Pullup Resistor (surface mount chip resistor)
— 1A, 40V Surface Mount Schottky Rectifier
— Output Voltage Program Resistor (surface mount chip resistor)
— Output Voltage Program Resistor (surface mount chip resistor)
— Error Flag Pullup Resistor (surface mount chip resistor)
— Delay Capacitor (surface mount ceramic chip capacitor)
— Delay Capacitor (surface mount ceramic chip capacitor)
— 68 µF, 20V Solid Tantalum, AVX, “TPS Series” (surface mount, “D” size)
— 10 µF, 35V, Solid Tantalum, AVX, “TPS Series” (surface mount, “D” size)
— 10 µF, 35V, Solid Tantalum, AVX, “TPS Series” (surface mount, “D” size)
— Soft-start Capacitor (surface mount ceramic chip capacitor)
— Soft-start Capacitor (surface mount ceramic chip capacitor)
— Feedforward Capacitor (surface mount ceramic chip capacitor)
— 100 µF, 10V Solid Tantalum, AVX, “TPS Series” (surface mount, “D” size)
TYPICAL SURFACE MOUNT PC BOARD LAYOUT, ADJUSTABLE OUTPUT (2X size)
TYPICAL SURFACE MOUNT PC BOARD LAYOUT, FIXED OUTPUT (2X size)
FIGURE 35. 2X Printed Circuit Board Layout
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DS012440-54
DS012440-55