1.8V output
1ch Series Regulator Driver IC
BD3500FVM
Description
The BD3500FVM is an ultra-low drop-out regulator for
mobile PC. Power supply for input is separated from
the power supply for a driver to supply power with
lowest input voltage. Industry's first speed of transient
responsivity is realized and also high-reliability is realized
for digital applications with lower voltage and larger current
because power supply can be composed to load current
by selecting external FET.
Features
1) Rush current reduced by NRCS
2) Built-in driver for external Nch transistor
3) Built-in timer latch short protection circuit
4) Built-in low input error operating protection circuit
5) Built-in overheat protection circuit
6) MSOP8 package
Applications
Power supply for mobile PC
Absolute Maximum Ratings (Ta=25˚C)
Parameter
Input voltage
VIN voltage
Enable input voltage
Power dissipation
Operating temperature range
Storage temperature range
Junction temperature
Symbol
V
CC
VIN
Ven
Pd
Topr
Tstg
Tjmax
-10
-55
Limits
7
7
7
437.5
~
~
+150
∗2
∗1
Dimension (Unit : mm)
2.9
±
0.1
4.0
±
0.2
8
5
2.8
±
0.1
0.475
0.9Max.
0.75
±
0.05
0.08
±
0.05
1
4
0.22
+0.05
-0.04
0.65
0.08 S
0.29
±
0.15
0.6
±
0.2
0.145
+0.05
-0.03
0.08
M
MSOP8
Unit
V
V
V
mW
+
100
+
150
˚C
˚C
˚C
∗1
Do not exceed Pd.
∗2
Derating : 3.5mW/˚C for operation Ta > 25˚C (No heat radiation board)
Recommended Operating Conditions (Ta=25˚C)
Parameter
Input voltage
VIN voltage
Enable input voltage
Symbol
V
CC
VIN
Ven
Min.
4.5
VoX1.15
-0.3
Typ.
-
-
-
Max.
5.5
5.5
5.5
Unit
V
V
V
∗This
product is not designed for protection against radioactive rays.
Electrical characteristics (
Unless otherwise noted: Ta=25˚C, Vcc=5V, VIN=3.3V, VEN=3V)
Parameter
Bias current
Shutdown mode current
Output voltage1
Output voltage2
<NRCS>
NRCS charge current
<Feedback>
VFB standby current
<OUTPUT>
G source current
G sink current
<UVLO>
V
CC
UVLO
V
CC
UVLO hysteresis
VIN UVLO
VIN UVLO hysteresis
<SCP>
SCP charge current
SCP threshold voltage
Short detection voltage
∗Design
guaranteed
Symbol
ICC
IST
Vo1
Vo2
Inrcs
FBSTB
IGSO
IGSI
V
CC
UVLO
V
CC
hys
VINUVLO
VINhys
Iscpch
Vscpth
Vscp
Min.
-
-
1.782
1.746
14
150
0.5
2
4.2
100
VoX1.05
100
14
1.2
VoX0.6
Typ.
0.8
0
1.800
1.800
20
-
1
3
4.35
160
VoX1.1
160
20
1.3
VoX0.7
Max.
1.6
10
1.818
1.854
26
-
1.5
4
4.5
220
VoX1.15
220
26
1.4
VoX0.8
Unit
mA
µA
V
V
µA
mA
mA
mA
V
mV
V
mV
µA
V
V
VEN=0V
Io=50mA
Conditions
Vcc=4.5V to 5.5V, Io=0A to 3A
∗
Ta=-10˚C to 100˚C
Vnrcs=0.5V, Vcc=4.5V to 5.5V
∗
Ta=-10˚C to 100˚C
VEN=0V, VFB=1V
VFB=Vo-0.1V, G=Vo+1V
VFB=Vo+0.1V, G=Vo+1V
Vcc : Sweep up
Vcc : Sweep down
VIN : Sweep up
VIN : Sweep down
VSCP=0.5V, Vcc=4.5V to 5.5V
∗
Ta=-10˚C to 100˚C
Application Circuit
V
CC
V
CC
NRCS
Enable
EN
+
NRCS
UVLO1
+
+
V
IN
UVLO2
VREF
Reference
Block
-
V
IN
G
VFB
Vo
VREF
VREF
-
CL
TSD
SCP
UVLO1
UVLO2
Thermal
Protection
-
TSD
VREF
+
SCP
BD3500FVM
SCP
GND
机器人开发
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