BD9846FV-E2 Rohm Semiconductor, BD9846FV-E2 Datasheet

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BD9846FV-E2

Manufacturer Part Number
BD9846FV-E2
Description
IC CONTROLLER BUCK 20SSOP
Manufacturer
Rohm Semiconductor
Type
Step-Down (Buck), PWMr
Datasheet

Specifications of BD9846FV-E2

Internal Switch(s)
No
Synchronous Rectifier
No
Number Of Outputs
2
Frequency - Switching
100kHz ~ 1.5MHz
Voltage - Input
3.6 V ~ 35 V
Operating Temperature
-40°C ~ 105°C
Mounting Type
*
Package / Case
*
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Voltage - Output
-
Current - Output
-
Other names
BD9846FV-E2TR
STRUCTURE
PRODUCTSERIES
TYPE
FEATURES
○Recommended operating range (Ta=25℃)
○Electrical characteristics (Unless otherwise specified, Ta=25℃,VCC=6V)
Absolute maximum ratings
【VREF output block】
VREF output voltage
Line regulation
Load regulation
Output max. current
*1 Should be deleted by 6.5mW/
Power Supply Voltage
Power dissipation
Output pin voltage
C5V pin voltage
Operating temperature
Storage temperature
Maximum Junction temperature
Power Supply Voltage
Output pin voltage
Error amplifier input voltage
Timing capacitor
Oscillation frequency
STB input voltage
Item
Item
Item
Silicon Monolithic Integrated Circuit
2-ch Switching Regulator Controller
BD9846FV
・MOSFET-driver circuit built-in(dual circuit for step-down output)
・Built-in circuits for error amplifier reference voltage
High Input-voltage ( Vcc=35V)
Over current detection circuit built-in.
Soft-start timing adjustable
(ch1:eternal regulation is possible , ch2:1.0 V1%)
(Ta=25℃)
Load reg.
Line reg.
Symbol
I
V
OMAX
REF
at Ta=25
2.47
Min.
Symbol
V
5
or more. When mounted on a glass epoxy PCB of 70.0mm×70.0 mm×1.6 mm
2
V
V
fosc
ERRIN
C
Vcc
OUT
STB
CT
Symbol
Limits
Tjmax
2.50
Typ.
V
V
Topr
REV. A
Tstg
13
Vcc
0
Pd
1
2
OUT
C5V
C5V
Min.
100
3.6
47
0
0
Max
2.52
10
10
5
.
Typ.
6.0
-
-
-
-
-
Unit
mV
mV
mA
Vcc-7V~Vcc
Vcc-7V~Vcc
V
-40~+105
-55~+150
812
Limits
150
36
*1
3000
1500
Max.
I
Vcc=3.6V→35V
I
V
Vcc
V
1.6
O
O
35
CC
REF
=0.1mA
=0.1mA→2mA
=(typ.)*0.95
Unit
Conditions
kHz
pF
V
V
V
V
Unit
mW
V
V
V
1/4

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BD9846FV-E2 Summary of contents

Page 1

... STRUCTURE Silicon Monolithic Integrated Circuit PRODUCTSERIES 2-ch Switching Regulator Controller BD9846FV TYPE ・ High Input-voltage ( Vcc=35V) FEATURES ・MOSFET-driver circuit built-in(dual circuit for step-down output) ・Built-in circuits for error amplifier reference voltage (ch1:eternal regulation is possible , ch2:1.0 V1%) ・ Over current detection circuit built-in. ...

Page 2

Ta=25℃,VCC=6V) Item 【 】 Triangular wave oscillator block Oscillation frequency Frequency variation 【Soft-start block】 SS pin source current SS pin sink current 【Dead time adjustable circuit block】 DT pin input bias current DT pin sink ...

Page 3

BD9846 1 pin Mark Lot NO. SSOP-B20 (Unit : mm) ○Block Diagram VCC VCC VREF STB REG VREF (2.5V) FB1 NON1 VREF 2μ SS1 + ERR + - - SS1OFF INV1 OSC 200μ ...

Page 4

Notes 1) Absolute maximum ratings Use of the IC in excess of absolute maximum ratings such as the applied voltage or operating temperature range may result in IC deterioration or damage. Assumptions should not be made regarding the state ...

Page 5

No copying or reproduction of this document, in part or in whole, is permitted without the consent of ROHM Co.,Ltd. The content specified herein is subject to change for improvement without notice. The content specified herein is for the purpose ...

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