BD9870FPS-E2 Rohm Semiconductor, BD9870FPS-E2 Datasheet - Page 2

• Manufacturer Part Number: BD9870FPS-E2
• Description: IC REG SW STEP DOWN TO-252S-5
• Manufacturer: Rohm Semiconductor
• Type: Step-Down (Buck)r

Specifications of BD9870FPS-E2

• Internal Switch(s): Yes
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Current - Output: 1.5A
• Frequency - Switching: 900kHz
• Voltage - Input: 8 ~ 35 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: DPak, TO-252 (Slim, 4 leads + tab)
• Power - Output: 800mW
• Input Voltage: 36 V
• Switching Frequency: 900 KHz
• Operating Temperature Range: -40 C to +85 C
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Output: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: BD9870FPS-E2TR

●Electrical Characteristics（Unless otherwise noted, Ta=25℃,Vcc=12V,Vo=5V,STBY=3V）
●Block Diagram
BD9870FPS
© 2009 ROHM Co., Ltd. All rights reserved.
www.rohm.com
Output ON Resistance
Efficiency
Switching Frequency
Load Regulation
Line Regulation
Over Current ProtectionLimit
INV Pin Threshold Voltage
INV Pin Input Current
STBY Pin Threshold
Voltage
STBYPin Input Current
Circuit Current
Stand-by Current
Soft Start Time
* This product is not designed to be resistant to radiation.
Parameter
OFF
ON
STBY
5
VSTBYOFF
ΔVOLOAD
VSTBYON
ΔVOLINE
Symbol
VINV
Istby
IINV
Ron
fosc
Iocp
Tss
Icc
Ist
η
STBY
VREF
OSC
0.99
MIN
810
-0.3
1.6
2.0
80
TSD
5
1
FIN
-
-
-
-
-
-
GND
Fig.1
2/11
VCC
COMP
PWM
1
Error AMP
LOGIC
CTL
Limit
TYP
1.00
900
1.0
88
15
5
5
1
5
0
4
-
-
-
DRIVER
OCP
SS
MAX
1.01
990
1.5
0.3
40
25
36
30
12
10
2
5
-
-
4
2
OUT
Unit
kHz
mV
mV
mA
INV
μA
μA
μA
ms
%
Ω
A
V
V
V
Io＝0.5A
Vcc=20V,
Io=0.5 to 1.5A
Vcc=10 to 30V, Io=1.0A
VINV=1.0V
STBY=3V
INV=2V
STBY＝0V
Conditions
Technical Note
2009.05 - Rev.A