BD9778F-E2 Rohm Semiconductor, BD9778F-E2 Datasheet - Page 2

• Manufacturer Part Number: BD9778F-E2
• Description: IC REG SW 2A P-CH MOSF STDN SOP8
• Manufacturer: Rohm Semiconductor
• Type: Step-Down (Buck)r

Specifications of BD9778F-E2

• Internal Switch(s): Yes
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Voltage - Output: 1 ~ 35 V
• Current - Output: 2A
• Frequency - Switching: 50kHz ~ 500kHz
• Voltage - Input: 7 ~ 35 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOP
• Power - Output: 690mW
• No. Of Outputs: 1
• Output Voltage: 35V
• Output Current: 2A
• Voltage Regulator Case Style: SOP
• No. Of Pins: 8
• Operating Temperature Range: -40°C To +125°C
• Svhc: No SVHC (18-Jun-2010)
• Base Number: 9778
• Input Voltage: 35 V
• Switching Frequency: 102 KHz
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant
• Other names: BD9778F-E2TR

Absolute Maximum Ratings(Ta = 25˚C)
Recommended operating range
Possible operating range
Electrical characteristics
BD9778F/HFP (Unless otherwise specified, Ta = -40˚C to +125˚C, V
* Not designed to be radiation-resistant.
*1 Should not exceed Pd-value.
*2 Reduce by 44mW/∞C over 25∞C, when mounted on 2-layer PCB of 70 ¥ 70 ¥ 1.6 mm3.
(PCB incorporates thermal via. Copper foil area on the front side of PCB: 10.5 ¥ 10.5 mm2. Copper foil area on the reverse side of PCB: 70 ¥ 70 mm2)
*3 Reduce by 5.52 mW/∞C over 25∞C, when mounted on 2-layer PCB of 70 ¥ 70 ¥ 1.6 mm3.
Power supply
voltage
Output switch pin voltage
Output switch current
EN/SYNC, EN pin voltage
RT, FB, INV pin voltage
Power dissipation
Operating temperature
range
Storage temperature range
Maximum junction temperature
Standby circuit current
Circuit current
[SW block]
Operating output current of overcurrent protection
Output leak current
[Error Amp block]
Reference voltage 1
Reference voltage 2
Reference voltage input regulation
Input bias current
Maximum FB voltage
Minimum FB voltage
FB sink current
FB source current
Soft start time
[Oscillator block]
Oscillation frequency
Frequency input regulation
[Enable block]
Threshold voltage
Sink current
POWER MOS FET ON resistance
Operating power supply voltage
Output switch current
Output voltage (ON Duty)
Oscillation frequency
Oscillation frequency set resistance
Operating power supply voltage
Parameter
Parameter
Parameter
Parameter
BD9778F/HFP,BD9781HFP
BD9001F
BD9778F/HFP, BD9001F
BD9781HFP
HRP7
SOP8
BD9778F/HFP,BD9781HFP
BD9001F
I
FBSOURCE
BD9778F/HFP
BD9778F/HFP
Symbol
∆V
I
I
I
FBSINK
∆F
OLIMIT
OLEAK
F
V
V
V
V
R
V
50 ~ 500
40 ~ 800
T
I
6 ~ 100
OSC
I
I
REF1
REF2
FBH
I
FBL
EN
REF
7 ~ 35
5 ~ 35
STB
Q
ON
SS
EN
B
OSC
V
~ 2
V
RT,
EN/SYNC,
Symbol
V
T
V
T
FB,
T
V
I
P
SW
jmax
0.98
0.96
-5.0
SW
Min.
opr
stg
IN
2/16
2.4
0.8
-1
70
82
d
V
-
-
-
-
-
-
-
-
-
2
INV
V
EN
Limits
Typ.
-3.0
0.53
1.00
1.00
0.05
120
102
0.5
2.5
1.7
13
-
0
3
4
0
5
1
100 ~ 800
BD9001F
BD9001F
50 ~ 300
7 ~ 48
6 ~ 100
7 ~ 48
~ 2
Max.
-0.5
1.02
1.04
0.10
170
122
IN
10
4.2
0.9
2.6
30
50
-
-
-
-
-
-
=13.2 V, V
-40 ~ +125
-40 ~ +95
-55 ~ +150
Limits
Unit
kHz
mA
mA
mS
0.69
μA
μA
μA
μA
μA
150
V
V
5.5
%
%
Ω
36
50
A
V
V
V
V
V
2
4
7
IN
IN
BD9781HFP
BD9781HFP
50 ~ 500
39 ~ 800
6 ~ 100
EN
7 ~ 35
5 ~ 35
V
I
I
* Design assurance
V
V
V
V
V
V
V
V
V
* Design assurance
V
V
R
O
SW
~ 4
EN
IN
FB
FB
IN
INV
INV
INV
FB
FB
IN
EN
T
=0A
= 5 V)
=390kΩ
Condition
=35V,V
=5 ~ 35V
=5 ~ 35V
=50mA
=V
=V
=1.5V,V
=1.5V,V
*1
*1
*2
*3
=0V,Ta=25˚C
=5V
=1.1V
=0.5V
=1.5V
INV
INV
,Ta=25˚C
EN
INV
INV
=0V
Unit
Unit
kHz
Unit
=1.5V
=0.5V
˚C
˚C
˚C
kΩ
W
%
V
V
A
V
V
A
V