BD9324EFJ-E2 Rohm Semiconductor, BD9324EFJ-E2 Datasheet - Page 11

• Manufacturer Part Number: BD9324EFJ-E2
• Description: IC CONVERTER REG 4A HTSOP-J8
• Manufacturer: Rohm Semiconductor
• Series: -r
• Type: Step-Down (Buck), PWM - Current Moder

Specifications of BD9324EFJ-E2

• Internal Switch(s): Yes
• Synchronous Rectifier: Yes
• Number Of Outputs: 1
• Voltage - Output: 1 V ~ 18 V
• Current - Output: 4A
• Frequency - Switching: 380kHz
• Voltage - Input: 4.75 V ~ 18 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: *
• Package / Case: *
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

z Soft Start Function
z EN Function
COMP
ex)
EN
The example of EN driving circuit.
The equivalent internal circuit.
(Hi active)
EN signal
VIN
+
-
VIN
2.9V(typ)
70k
SS
EN
Css
IC
11/14
prevent high inrush current during start up.
connected to SS pin.
to pull the current from EN terminal and make the
EN voltage low.
current when deciding the SS capacitor value.
The buck converter has an adjustable oftStart function to
The soft-start time is set by the external capacitor
The EN terminal controls IC’s shut down.
Leaving EN terminal open, makes IC start up automatically.
To shut down the IC, the external component has
The EN threshold voltage is 0.63V (typ.).
Please confirm the overshoot of the output voltage and inrush
Tss [ms] = 16.2 Css [uF]