Datasheet
Data eet
In
nput Volta 5. to 35V Output S
age .0V o V
Switch
Current 2A 1ch Step
C
A
p-Dow DC
wn C/DC Conv er
verte
BD9060HFP-C
B
Ge
eneral Descr
ription
The BD906
60HFP-C BD
D9060F-C ar high-accu
re
uracy
frequency-flexible step-down switching regulators with
built-in POW
WER MOS F
FET which ca withstand high
an
pressure. The operat
tional frequency is fr
reely
configurable with externa resistance. It features a w
wide
e
al
input voltag range (5V to 35V) and a high freque
ge
ency
accuracy of ±5% (f=200kH to 500kHz) Furthermore an
Hz
).
e,
nchronization input pin ena
ables synchron
nous
external syn
operation w
with external clock. The output capa
acitor
corresponds to the ceram capacitor.
s
mic
BD9
9060F-C
Key Specificatio
y
ons
■
Input Vo
oltage Range:
5V to 35
5V
■
Output Voltage Range
V
e:
0.8V to VIN
NV
■
Output Switch Currentt:
S
2 A (Ma
ax)
■
Selectab Oscillating Frequency: 50kHz to 500kH
ble
Hz
■
Oscillating Frequency Accuracy:
y
±5
5%
0kHz to 500kH
Hz)
(f=200
R
On
:
0.6Ω(Ma
ax)
■
POWER MOS FET O Resistance:
■
Reference Voltage Ac
ccuracy:
±2% (Ty
yp)
■
Standby Circuit Curre
y
ent:
0 µA (Ty
yp)
■
Operatin Temperatur Range: -40°C to +125°
ng
re
°C
■
AEC-Q100 Qualified
Fe
eatures
■
■
■
■
■
■
■
Minimal external com
mponents
P-ch PO
OWER MOS F
FET included in the package
i
e
Low dro
opout:100% O duty cycle
ON
Externa synchroniza
al
ation enabled
Soft sta function: so start time fix to 2.7ms (
art
oft
xed
(Typ)
Built-in overcurrent protection circu
uit
Built-in thermal shutd
down protectio circuit
on
Pac
ckage
HRP7
W(Typ) x D(Typ) x H(Ma
D
ax)
10.540mm x 2.005mm
2
9.395mm x 1
Ap
pplications
Battery-pow
wered in-vehicl unit (Cluster, Car multime
le
edia,
etc.), communication such as ETC, all fields of indus
h
f
strial
equipment, Flat TV, Printe DVD, AV, OA
er,
O
SOP8
5.00mm x 6.2
20mm x 1.71m
mm
Typical Applic
cation Circuit
○P
Product structure
e：Silicon mono
olithic integrated circuit
d
ww
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013
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Z22111・14・0
001
○Thi
is product has no designed protection against radioactive rays
n
s
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02201-0T1T0AL00080-1-2
30.Aug.2013 Rev.00
04
BD9060HFP-C
BD9060F-C
Datasheet
Block Diagram, Pin Configuration, Pin Description
(BD9060HFP-C)
VIN
1
VREG
UVLO
TSD
UVLO
TSD
OSC
INV
5
ERR
7
EN/SYNC
VREF
SYNC
V
IN
S
SLOPE
DRV
LOGIC
PWM
DRV
V
IN
0.8V
R
V
IN
V
IN
2
SW
SOFT
START
FB
3
UVLO, TSD
OCP, SCP
OCP
SCP
OCP
SCP
4
GND
0.6V
6
RT
HRP7
(TOP VIEW)
Pin No.
1
2
3
4
5
6
7
FIN
Pin Name
VIN
SW
FB
GND
INV
RT
EN/SYNC
-
Function
Power supply input
Output
Error Amp output
Ground
Output cottage feedback
Frequency setting resistor connection
Enable/Synchronizing pulse input
Ground
1 2 3 4 5 6 7
(BD9060F-C)
VIN
1
VREG
UVLO
TSD
UVLO
TSD
OSC
INV
4
ERR
5
EN/SYNC
VREF
SYNC
8
PVIN
S
SLOPE
DRV
LOGIC
PWM
DRV
0.8V
R
PV
IN
PV
IN
2
SW
SOFT
START
FB
3
UVLO, TSD
OCP, SCP
OCP
SCP
OCP
SCP
7
GND
0.6V
6
SOP8
(TOP VIEW)
8
7
6
5
RT
Pin No.
1
2
3
4
5
6
7
8
Pin Name
VIN
SW
FB
INV
EN/SYNC
RT
GND
PVIN
Function
Power supply input
(Note1)
Output
Error Amp output
Output cottage feedback
Enable/Synchronizing pulse input
Frequency setting resistor connection
Ground
Power supply input
(Note1)
1
2
3
4
(Note 1) PVIN and VIN are shorted
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TSZ02201-0T1T0AL00080-1-2
30.Aug.2013 Rev.004
BD9060HFP-C
BD9060F-C
Datasheet
Description of Blocks
・ERR(Error
Amp)
The Error Amp block is an error amplifier used to input the reference voltage (0.8V (Typ)) and the INV pin voltage. The
output FB pin controls the switching duty and output voltage Vo. These INV and FB pins are externally mounted to
facilitate phase compensation. Inserting a capacitor and resistor between these pins enables adjustment of phase margin.
(Refer to recommended examples on P. 15 to 17)
・SOFT
START
The SOFT START block provides a function to prevent the overshoot of the output voltage Vo through gradually increasing
the normal rotation input of the error amplifier when power supply turns ON to gradually increase the switching duty. The
soft start time is set to 2.7ms (Typ).
・SYNC(EN/SYNC)
By making the “EN/SYNC” terminal less than 0.8V, the circuit can be shut down. Furthermore, by applying higher
frequency pulse than the configured oscillation frequency to the “EN/SYNC” pin, external synchronization is possible.
Frequency range of external synchronization is F
OSC
x 1.05
≤F
sync
≤500kHz
and 1.5 times of the set frequency. (Refer to
P.11)
・OSC
(Oscillator)
This circuit generates the pulse wave to be inputted to the SLOPE, and by connecting a resistor to the “RT”, 50kHz to
500kHz oscillating frequency can be configured. (Refer to P.15 Figure 23)
・SLOPE
This block generates sawtooth waves from the clock generated by the OSC. The generated sawtooth waves are sent to
PWM.
・PWM
The PWM Comparator block is a comparator to make comparison between the FB pin and internal sawtooth wave and
outputs a switching pulse. The switching pulse duty varies with the FB value. (Min Duty width: 250ns)
・TSD
(Thermal Shutdown)
In order to prevent thermal destruction/thermal runway of the IC, the TSD block will turn OFF the output when the chip
temperature reaches approximately 150°C or more. When the chip temperature falls to a specified level, the output will be
reset. However, since the TSD is designed to protect the IC, the chip junction temperature should be provided with the
thermal shutdown detection temperature of less than approximately.150°C.
・OCP
(Over Current Protection)
While the output POWER P-ch MOS FET is ON, if the voltage between drain and source (on-resistancexload current)
exceeds the reference voltage internally set with the IC, OCP will start up.This OCPis a self-return type. If OCP operates,
the duty will be small, and output voltage will decrease. However, this protection circuit is only effective in preventing
destruction from sudden accident. It does not support for continuous operation of the protection circuit (e.g. if a load, which
significantly exceeds the output current capacitance, is normally connected). Furthermore, since the overcurrent
protection detection value has negative temperature characteristics, consider thermal design.
・SCP
(Short Current Protection)
While OCP operates, and if the output voltage falls below 70%, SCP will start up. If SCP operates, the output will be turned
OFF after a period of 1024 pulse. It extends the output OFF time to reduce the average output current. In addition, during
power start-up, this feature is masked until it reaches the set output voltage to prevent wrong trigger of SCP.
・UVLO
(Under Voltage Lock-Out)
UVLO is a protection circuit for low voltage malfunction. It preventsmalfunction of the internal circuit at the time of sudden
rise and fall of power supply voltage. It monitors the V
IN
powersupply voltage and internal regulator voltage. If V
IN
is less
than 4.3V (Typ), Pch POWER MOS FET output is OFF. This threshold voltage has a hysteresis of 200mV (Typ). If V
IN
is
more than 4.5V (Typ) , UVLO will be released and the soft start circuit will be restarted.
・DRV
(Driver)
This is a driver circuit for driving the gate electrode of the Pch POWER MOS FET output. By switching the driving voltage
when the power supply voltage drop, it reduces the deterioration ofPOWER MOS FET on-resistance. It monitors the V
IN
power supply voltage and internal regulator voltage. If V
IN
is less than 7.5V (Typ), the driving voltage is switched.This
threshold voltage has a hysteresis of 1.5V (Typ).
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TSZ02201-0T1T0AL00080-1-2
30.Aug.2013 Rev.004
BD9060HFP-C
BD9060F-C
Datasheet
Absolute Maximum Ratings
(Ta=25°C)
Parameter
Power Supply Voltage
Output Switch Pin Voltage
Output Switch Current
EN/SYNC Pin Voltage
RT,FB,INV Pin Voltage
HRP7
Power Dissipation
SOP8
Symbol
V
IN
, PV
IN
V
SW
I
SW
V
EN/SYNC
V
RT
,V
FB
, V
INV
Pd
Pd
Tstg
Tjmax
Limits
42
V
IN
4
(Note 1)
V
IN
7
5.51
(Note 2)
0.69
(Note 3)
-55 to +150
150
Unit
V
V
A
V
V
W
W
°C
°C
Storage Temperature Range
Maximum Junction Temperature
(Note 1) Pd should not be exceeded.
(Note 2) Reduce by 44mW/°C,when mounted on 2-layerPCB of 70mmx70mmx16mm
(PCB incorporates thermal via. Copper foil area on the reverse side of PCB: 10.5mmx10.5mm
Copper foil area on the reverse side of PCB: 70mmx70mm).
(Note 3) Reduce by 5.52mW/°C,when mounted on 1-layerPCB of 70mm x70mm x1.6mm
Caution: Operating the IC over the absolute maximum ratings may damage the IC. In addition, it is impossible to predict all destructive situations such as
short-circuit modes, open circuit modes, etc. Therefore, it is important to consider circuit protection measures, like adding a fuse, in case the IC is operated in a
special mode exceeding the absolute maximum ratings.
Recommended Operating Conditions
Parameter
Operating Power Supply Voltage
Operating Temperature Range
Output Switch Current
Output Voltage (min pulse width)
Oscillating Frequency
Oscillating Frequency Set Resistance
External Sync Frequency
(Note 1)
It should be configured at less than 500kHz.
Symbol
V
IN
, PV
IN
Topr
I
SW
PW
MIN
fosc
RT
f
SYNC
Limits
5 to 35
-40 to +125
to 2
250
50 to 500
27 to 360
F
OSC
x 1.05
≤F
sync
≤F
OSC
x 1.5
(Note 1)
Unit
V
°C
A
ns
kHz
kΩ
kHz
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TSZ22111・15・001
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TSZ02201-0T1T0AL00080-1-2
30.Aug.2013 Rev.004
BD9060HFP-C
BD9060F-C
Datasheet
Electrical Characteristics
(Unless otherwise specified, Ta=- 40°C to +125°C, V
IN
=13.2V,V
EN/SYNC
=5V)
Parameter
Symbol
I
STB
I
CC
Guaranteed Limit
Min
－
Typ
0
3.7
Max
5
8.0
Unit
µA
mA
Conditions
V
EN/SYNC
=0V,
Ta=-40°Cto +105°C
－
I
OUT
=0A, RT=51kΩ,
V
INV
=0.7V
Standby Circuit Current
Circuit Current
SW Block
POWER MOS FET ON
Resistance
Operating Output Switch
Current Of Overcurrent
Protection
(Note 1)
Output Leak Current
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
(Note 1)
Oscillator Block
Oscillating Frequency
Frequency Input Regulation
Enable/Sync Input Block
Output ON Voltage
Output OFF Voltage
Sink Current
R
ON
I
LIMIT
－
2.5
0.3
4
0.6
－
Ω
A
V
IN
=35V, V
EN/SYNC
=0V,
Ta=-40°C to +105°C
I
OLEAK
－
0
5
µA
V
REF
1
V
REF
2
ΔV
REF
I
B
V
FBH
V
FBL
I
FBSINK
I
FBSOURCE
T
SS
0.784
0.780
－
-1
2.0
－
-2.45
1.0
1.7
0.800
0.800
0.5
－
2.5
0.51
-1.23
6.3
2.7
0.816
0.820
－
－
－
0.80
-0.45
15.0
5.0
V
V
%
µA
V
V
mA
mA
ms
V
FB
= V
INV
V
FB
= V
INV
, V
IN
=5V to 35V
V
IN
=5V to 35V
V
INV
=0.6V
V
INV
=0V
V
INV
=2V
V
FB
=1V, V
INV
=1V
V
FB
=1V, V
INV
=0.6V
fosc
Δfosc
285
－
300
0.5
315
－
kHz
%
RT=51kΩ
V
IN
=5V to 35V
V
ENON
V
ENOFF
I
EN/SYNC
2.6
－
－
－
－
19
－
0.8
60
V
V
µA
V
EN/SYNC
Sweep Up
V
EN/SYNC
Sweep Down
(Note 1)This item is not 100% production tested.
EN / SYNC and RT are shorted at VIN and EN / SYNC short-circuited, IC is destroyed in VIN
≥
7V,
(Caution)
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