BD9778F-E2 Rohm Semiconductor, BD9778F-E2 Datasheet - Page 3

• 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

* Not designed to be radiation-resistant.
BD9001F (Unless otherwise specified, Ta=-40˚C ~ +95˚C,V
BD9781HFP (Unless otherwise specified, Ta=-40˚C ~ +125˚C,V
* Not designed to be radiation-resistant.
Standby circuit current
Circuit current
[SW block]
POWER MOS FET ON resistance
Operating output current of overcurrent protection
[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
[SW block]
POWER MOS FET ON resistance
Operating output current of overcurrent protection
Output leak current
Minimum FB voltage
FB sink current
Oscillation frequency
Frequency input regulation
[Enable/Synchronizing input block]
Threshold voltage
Sink current
External synchronizing frequency
Standby circuit current
Circuit current
[Error Amp block]
Reference voltage1
Reference voltage2
Reference voltage input regulation
Input bias current
Maximum FB voltage
FB source current
Soft start time
[Oscillator block]
Parameter
Parameter
I
I
FBSOURCE
FBSOURCE
V
I
Symbol
∆V
Symbol
∆V
EN/SYNC
I
I
I
I
I
EN/SYNC
F
FBSINK
∆F
FBSINK
∆F
OLIMIT
F
OLIMIT
OLEAK
F
V
V
V
V
V
V
V
V
R
R
V
T
I
SYNC
Tss
OSC
OSC
I
I
REF1
REF2
FBH
EN
I
I
REF1
REF2
FBH
I
FBL
I
FBL
REF
REF
ON
EN
ON
STB
Q
STB
Q
SS
B
B
OSC
OSC
0.98
0.96
-5.0
0.98
0.97
-5.0
Min.
Min.
3/16
2.5
2.4
0.8
2.4
0.8
-1
-1
70
82
70
82
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
4
Limits
Limits
IN
Typ.
-3.0
Typ.
-3.0
1.00
1.00
0.05
1.00
1.00
0.05
120
102
120
102
150
0.6
0.5
2.5
1.7
13
0.5
0.5
2.5
1.7
35
=13.2V, V
-
-
4
3
4
2
0
3
8
0
5
1
5
IN
=13.2V,V
Max.
Max.
-0.5
-0.5
1.02
1.04
0.10
2.6
1.02
1.03
0.10
170
122
170
122
1.2
50
0.9
2.6
10
4.2
10
30
90
-
-
-
-
-
-
-
-
-
-
-
-
-
8
EN
=5V)
Unit
Unit
kHz
kHz
kHz
mA
mA
mA
mA
mS
μA
μA
μA
μA
EN/SYNC
μA
μA
μA
μA
μA
Ω
%
ms
%
Ω
%
%
A
V
V
V
V
V
A
V
V
V
V
V
V
V
I
I
* Design assurance
V
V
V
V
V
V
V
* Design assurance
V
V
V
I
I
* Design assurance
V
V
V
V
V
V
V
V
V
* Design assurance
V
V
F
R
R
O
SW
O
SW
EN
FB
IN
EN/SYNC
FB
IN
INV
INV
INV
FB
FB
IN
EN
=5V)
EN/SYNC
FB
FB
IN
INV
INV
INV
FB
FB
IN
EN/SYNC
T
T
=0A
=0A
=390kΩ
=390kΩ
=35V,V
=7 ~ 48V
=7 ~ 48V
=5 ~ 35V
=5 ~ 35V
=50mA
=V
=50mA
=0V,Ta=25˚C
=V
=1.5V,V
=1.5V,V
=V
=V
=1.5V,V
=1.5V,V
=5V
=1.1V
=0.5V
=1.5V
=1.1V
=0.5V
=1.5V
Condition
Condition
INV
INV
INV
INV
,Ta=25˚C
=150kHz
=0V,Ta=25ºC
=5V
,Ta=25ºC
EN/SYNC
INV
INV
INV
INV
=1.5V
=0.5V
=1.5V
=0.5V
=0V