BD95513MUV-E2 Rohm Semiconductor, BD95513MUV-E2 Datasheet - Page 11

• Manufacturer Part Number: BD95513MUV-E2
• Description: IC REG SW 1CH STEP DOWN 32-VQFN
• Manufacturer: Rohm Semiconductor
• Type: Step-Down (Buck)r

Specifications of BD95513MUV-E2

• Internal Switch(s): Yes
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Voltage - Output: 0.7 ~ 5 V
• Current - Output: 3A
• Frequency - Switching: 200kHz ~ 600kHz
• Voltage - Input: 4.5 ~ 28 V
• Operating Temperature: -10°C ~ 100°C
• Mounting Type: Surface Mount
• Package / Case: 32-VQFN
• Power - Output: 4.56W
• Output Current: 3 A
• Input Voltage: 4.5 V to 28 V
• Switching Frequency: 200 KHz to 1 MHz
• Operating Temperature Range: - 10 C to + 100 C
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: BD95513MUV-E2TR

EN/UVLO
●Timing Chart
・Output Over-Voltage Protection
© 2010 ROHM Co., Ltd. All rights reserved.
BD95513MUV
www.rohm.com
V
OUT
V
・Soft Start Function
EN
・Timer Latch-type Short Circuit Protection
V
SS
SCP
I
OUT
IN
HG
OUT
LG
t
SS
1ms
V
REF
×0.70
V
Switching
REF
×1.2
11/17
The soft start function is enabled when the EN pin is set high.
Current control circuitry takes effect at startup, yielding a
moderate “ramping start” in output voltage. Soft start timing
and incoming current are given by equation (2) and (3) below:
When output voltage falls to V
circuit protection engages, turning the IC off after a set period of
time to prevent internal damage. When EN is switched back on
or when UVLO is cleared, output continues.
The time period before shutting off is set internally at 1ms.
When output reaches or exceeds V
over-voltage protection is engaged, turning the low-side FET
completely on to reduce the output (low gate on, high gate off).
When the output falls, it returns to standard mode.
Soft start period:
Rush current:
(Css: soft start capacitor; Co: output capacitor)
t
I
SS
IN
(ON)=
=
V
2µA(typ)
REF
Co×V
×Css
tss
OUT
[sec]
REF
・・・(2)
[A]
x 0.70 or less, the output short
・・・(3)
REF
Technical Note
x 1.2, the output
2010.10- Rev.A