BD9870FPS-E2 Rohm Semiconductor, BD9870FPS-E2 Datasheet - Page 7

• 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

●Typical Performance Characteristics（Unless otherwise noted, Ta=25℃,Vcc=12V,Vo=5V,STBY=3V）
BD9870FPS
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10
1100
1050
1000
1.05
1.04
1.03
1.02
1.01
1.00
0.99
0.98
0.97
0.96
0.95
Fig.9 ErrorAmp Threshold Voltage vs. Supply Voltage
9
8
7
6
5
4
3
2
1
0
950
900
850
800
750
700
Fig.5 Circuit Current vs. Supply Voltage：no load
0
Fig.7 Oscillator Frequency vs. Supply Voltage
5
0
10
10
10
15
Input Voltage[V]
Input Voltage[V]
Input Voltage[V]
20
20
20
25
30
Io=0m A
30
30
35
40
40
40
7/11
1100
1050
1000
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
7
6
5
4
3
2
1
0
950
900
850
800
750
700
Fig.6 Stand-by Current vs. Ambient temperature
0.0
-40
-40
Fig.8 Oscillator Frequency vs. Supply Voltage
Fig.10 Output Voltage vs. STBY Pin Voltage
-15
-15
Am bient Tem perature[ ℃ ]
Ambient Temperature[ ℃ ]
STBY Input Voltage[V]
VCC=12V
VCC=24V
VCC=8V
1.0
10
10
35
35
2.0
Technical Note
2009.05 - Rev.A
VCC=35V
STBY=0V
60
60
85
3.0
85