bd8311nuv-e2 ROHM Co. Ltd., bd8311nuv-e2 Datasheet - Page 2

• Manufacturer Part Number: bd8311nuv-e2
• Description: High-efficiency Step-up Switching Regulator With Built-in Power Mosfet
• Manufacturer: ROHM Co. Ltd.

● Electrical Characteristics
(Unless otherwise specified, Ta = 25 °C, VCC = 7.4 V)
 Not designed to be resistant to radiation
● Description of Pins
[Low voltage input malfunction preventing circuit]
Detection threshold voltage
Hysteresis range
[Oscillator]
Oscillation frequency
[Regulator]
Output voltage
[ERROR AMP]
INV threshold voltage
Input bias current
Soft-start time
[PWM comparator]
LX Max Duty
[SWOUT]
ON resistance
[Output]
LX NMOS ON resistance
LX leak current
[STB]
STB pin
control voltage
STB pin pull-down resistance
[Circuit current]
Standby current
Circuit current at operation
VREG
GND
VCC
LX
LX
Parameter
Fig.1 Pin layout
Operation
No-operation
VCC
VCC
R
ΔV
Symbol
ONSWOUT
Dmax1
V
VREG
V
VINV
R
Ileak
IINV
R
V
fosc
I
Tss
STB
STB
STB
Icc
UV
STB
UV
ON
PGND
PGND
SWOUT
INV
STB
hy
H
L
Minimum
4.65
0.99
-0.3
100
250
1.1
-50
2.5
77
5.3
-1
-
-
-
-
-
2/14
Target Value
Typical
1.00
Pin No.
200
400
600
2.9
1.2
5.0
8.8
85
50
80
4～5
6～7
0
0
-
-
-
10
1
2
3
8
9
Maximum
Pin Name
SWOUT
5.35
1.01
12.2
VREG
PGND
300
100
150
700
900
3.2
1.3
0.3
GND
50
93
VCC
11
STB
INV
1
1
Lx
msec
5 V output terminal of regulator for
MHz
Unit
mΩ
Control part power input terminal
mV
Power transistor ground terminal
nA
uA
kΩ
uA
uA
%
Ω
V
V
V
V
V
ERROR AMP input terminal
Coil connecting terminal
STBSW for split resistance
ON/OFF terminal
Ground terminal
VREG monitor
Vcc=11.0V , V
V
internal circuit
INV
Function
=1.2V
Conditions
INV
=5.5V