BD3951F-E2 Rohm Semiconductor, BD3951F-E2 Datasheet - Page 5
![IC REG LDO W/VOLT DETECT 8SOP](/photos/18/98/189855/ge8sop05-40_sml.jpg)
BD3951F-E2
Manufacturer Part Number
BD3951F-E2
Description
IC REG LDO W/VOLT DETECT 8SOP
Manufacturer
Rohm Semiconductor
Specifications of BD3951F-E2
Regulator Topology
Positive Fixed
Voltage - Output
5V
Voltage - Input
6 ~ 20 V
Voltage - Dropout (typical)
0.31V @ 100mA
Number Of Regulators
1
Current - Output
150mA (Min)
Operating Temperature
-40°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
8-SOP
Primary Input Voltage
13.5V
Output Voltage
5.1V
Dropout Voltage Vdo
310mV
No. Of Pins
8
Output Current
150mA
Voltage Regulator Case Style
SOP
Operating Temperature Range
-40°C To +125°C
Svhc
No
Mounting Style
SMD/SMT
Output Voltage Fixed
5.1V
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Current - Limit (min)
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
BD3951F-E2
Manufacturer:
ROHM/罗姆
Quantity:
20 000
●Input/Output terminal Circuit
● How to set RESET delay time using CT terminal capacitor
There are three factors to define the RESET delay time TdLH. External capacitor value Cct of the CT terminal, internal
charge resistor and internal reference voltage. RESET delay time is approximately described as below equation.
SIN(2pin)
Internal charge resistor 300k has some inaccuracy. The deviation of this inaccuracy is shown in Fig. 16. However, as
TdLH delay time may be effected by application board, application board test is recommended to select the right Cct.
Vcc
10,000
1,000
20k
200k
100
RES(6pin)
SIN(2pin)
10
1
0.01
(TYP): TdLH 300K × Cct(sec)
OUT(8pin)
RES(6pin)
0.1
Fig.16
Cct[μF]
RADJ(3pin)
1
Vcc
20k
10
SOUT(7pin)
Fig.15
RADJ(3pin)
340
5/8
(MAX): TdLH≒530k×Cct
(TYP): TdLH≒300k×Cct
(MIN): TdLH≒170k×Cct
OUT(8pin)
SOUT(7pin)
1260k
420k
300k
4.1k
OUT(8pin)
CT(4pin)
Vcc
CT(4pin)
OUT(8pin)
Vcc