BD8314NUV-E2 Rohm Semiconductor, BD8314NUV-E2 Datasheet - Page 9

• Manufacturer Part Number: BD8314NUV-E2
• Description: IC SWITCHING REG W/MOSFET SON10
• Manufacturer: Rohm Semiconductor
• Series: -r
• Type: Step-Up (Boost), PWMr

Specifications of BD8314NUV-E2

• Internal Switch(s): Yes
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Voltage - Output: 4 V ~ 12 V
• Current - Output: 2.5A
• Frequency - Switching: 1.2MHz
• Voltage - Input: 3 V ~ 12 V
• Operating Temperature: -25°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 10-VFDFN Exposed Pad
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

●Limits of the lowest power supply voltage to start up
BD8314NUV
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When using configuration of inputting VCC voltage from output voltage of DC/DC converter, the input voltage as power
supply for the IC drops by Vf voltage of external Diode.
The worst condition is shown as below.
VCC terminal voltage - Vf voltage of external diode ≧ the worst voltage of UVLO reset voltage(=2.8V)
Please judge this IC is useable or not considering needed start up voltage and load current.
Fig.32 start up voltage Vs load current
3.2
3.0
2.8
2.6
2.4
2.2
0.1
VOUT=10V, typ
85℃
1.0
Io [mA]
-35℃
10.0
25℃
100.0
9/15
Technical Note
2010.11 - Rev.C