LM3402HVEVAL National Semiconductor, LM3402HVEVAL Datasheet - Page 18

• Manufacturer Part Number: LM3402HVEVAL
• Description: BOARD EVALUATION FOR LM3402HV
• Manufacturer: National Semiconductor
• Series: PowerSmart®r

Specifications of LM3402HVEVAL

• Current - Output / Channel: 500mA
• Outputs And Type: 1, Non-Isolated
• Voltage - Output: 4 V
• Features: Dimmable
• Voltage - Input: 6 ~ 75 V
• Utilized Ic / Part: LM3402
• Core Chip: LM3402HV
• Topology: Buck
• Input Voltage: 6V To 75V
• Dimming Control Type: PWM
• Kit Contents: Board
• Svhc: No SVHC (15-Dec-2010)
• Kit Features: Cycle-by-Cycle Current Limit, Separate PWM Dimming
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: *LM3402HVEVAL

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VIN PIN PROTECTION
The VIN pin also has an ESD structure from the pin to GND
with a breakdown voltage of approximately 80V. Any transient
that exceeds this voltage may damage the device. Although
transient absorption is usually present at the front end of a
FIGURE 9. CS Pin with OVP, Transient Path with Protection
FIGURE 8. CS Pin with OVP, Transient Path
18
switching converter circuit, damage to the VIN pin can still
occur.
When V
charge C
circuit board trace inductance as shown in
cited trace inductance then resonates with the input capaci-
IN
IN
is hot swapped in, the current that rushes in to
up to the V
IN
value also charges (energizes) the
20192161
20192160
Figure
10. The ex-