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Panasonic Electronic Components Datasheet

AN33017UA Datasheet

1-channel DC-DC Step down Regulator integrated N-channel Power MOSFET

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Doc No. TA4-EA-A0521
Revision. 0
Product Standards
AN33017UA
VIN = 5 to 39 V, 1-channel DC-DC Step down Regulator
integrated N-channel Power MOSFET
FEATURES
DESCRIPTION
Current Feedback Function compensates output voltage
AN33017UA is 1-channel DC-DC Step down Regulator
drop due to external USB cable loss
integrated N-channel Power MOSFET and employs the
Internal reference voltage is within 1% accuracy.
voltage mode switching control system.
Input Voltage Range : PVCC , VCC: 5 V to 39 V
Switching frequency is adjustable within the range of 200
kHz to 2 MHz by an external resistor.
Standby mode consumes less than 1µA current.
Adjustable Output Voltage Range with external Resistor :
1.2 V ~ 9 V.
Output over voltage protection (OVP1) function.
Output ground short protection function.
Input over voltage protection (OVP2) function.
This IC can be operated with wide input voltage range
and is build in several protection functions, so this IC can
provide high reliability power supply system.
Since it is possible to use up to 2MHz switching
frequency and it is unnecessary to add external parts for
High Side Switch, this IC realizes downsizing of set and
reducing in the number of external parts.
For USB applications, this IC can controlled USB
supplied voltage level with external resistor for USB load
current monitor (Current Feedback Function), and it can
Over current protection (OCP) with adjustable threshold.
Over current detection level with switchable.
Power supply under-voltage lockout (UVLO) function.
Thermal Shut-Down (TSD) function.
Adjustable soft-start function.
48 pin Plastic Quad Flat Package With Heat Sink.
(QFP Type)
provide suitable power supply system for external USB
with no voltage drop due to USB cable loss.
Maximum current is 2.1 A.
APPLICATIONS
High Input Voltage Power Systems for USB such as
Car-Audio system
Car-Navigation system
OA Equipment
Home Appliances etc.
SIMPLIFIED APPLICATION
1.0F
5 V ~ 39 V
EFFICIENCY CURVE
Pullup
EN VREG VCC
OCPDET
BTVCC
PVCC1
PVCC2
22F×3
100
90
80
200k
0.1µF
External
CLK
130k
TL_CTRL
PVCC3
FLAG
PVCC4
IN_LOW
TL AN33017UA IN_HIGH
BT
SYNC
RTCTSGND SS FB
LX1
LX2
LX3
FBADJ
COMP
FBGND
0.1µF 10µH
22µF
150
50m
4700pF
LX4
LX5
0.1µF
0.1 7.5k2.2nF
µF
27pF
470pF 1.5k
PGND
12k
330
70
60
50
40
30
20
10
0
0
300 600 900 1200 1500
Iload (mA)
Notes :
7.5k30k
Condition :
This application circuit is an example. The operation of mass production set
VIN = 6 V, 12 V, 39 V
is not guaranteed. You should perform enough evaluation and verification
on the design of mass production set. You are fully responsible
for the incorporation of the above application circuit and information
VOUT = 5 V, LO = 10 µH, CO = 22 µF
Frequency = 490 kHz
in the design of your equipment.
This block diagram is for explaining functions. The part of the block diagram
may be omitted, or it may be simplified.
These components should be put without fail for reducing the ringing of
LX1~5 in light load condition. Please use snubber resistance over 0.5W.
Please refer to “OPERATION13.Snubber circuit value setting” for setting specific value.
Load resistance, Rload should be put without fail. Load resistance
under 330Ωis recommended in VOUT=5V condition. Please refer to
OPERATION14.Load resistance, Rload setting” for setting specific value.
SS pin capacitor, CSS and TL pin capacitor CTL should be put 0.1uF.
If you change these components, please keep “ CTL > CSS × 0.9 “ relation.
VCC=6V
VCC=12V
VCC=39V
1800 2100
Established : 2017-06-28
Revised : ####-##-##
Page 1 of 26


Panasonic Electronic Components Datasheet

AN33017UA Datasheet

1-channel DC-DC Step down Regulator integrated N-channel Power MOSFET

No Preview Available !

Doc No. TA4-EA-A0521
Revision. 0
Product Standards
AN33017UA
ABSOLUTE MAXIMUM RATINGS
Parameter
Symbol
Rating
Unit
Supply voltage
Operating free-air temperature
Operating junction temperature
Storage temperature
Input Voltage Range
Output Voltage Range
Input / Output Voltage Range
VCC
Topr
Tj
Tstg
VBT
VEN
VFB , VBTVCC , VTL_CTRL
VSYNC , VOCPDET , VRT, VTL, VSS
VIN_HIGH , VIN_LOW
VFLAG, VCOMP, VCT
VLX1 , VLX2 , VLX3 , VLX4 , VLX5
VFBADJ
60
40 to + 85
40 to + 150
55 to + 150
0.3 to (VCC+ VREG)
0.3 to (VCC+ 0.3)
0.3 to + 5.5
0.3 to + 10.0
0.3 to + 5.5
0.3 to (VCC+ 0.3)
0.3 to + 5.5
V
C
C
C
V
V
V
V
V
V
V
ESD
HBM
MM
2 kV
200 V
Notes: This product may sustain permanent damage if subjected to conditions higher than the above stated absolute
maximum rating. This rating is the maximum rating and device operating at this range is not guaranteeable
as it is higher than our stated recommended operating range. When subjected under the absolute maximum rating
for a long time, the reliability of the product may be affected.
*1 :The values under the condition not exceeding the power dissipation.
VCC is voltage for VCC, PVCC1, PVCC2, PVCC3, PVCC4
VCC = PVCC1 = PVCC2 = PVCC3 = PVCC4.
*2 :Without power dissipation (PD) and area of safety operation (ASO) constraint.
ICC = IVCC + IPVCC1 + IPVCC2 + IPVCC3 + IPVCC4.
. *3 :Except for the operating ambient temperature, operating junction temperature and storage temperature,
all ratings are for Ta = 25 C.
*4 :(VCC + VREG) V, (VCC + 0.3) V must be not exceeded 60 V.
Notes
*1
*2
*3
*3
*1, *4
*1, *4
*1
*1
*1
*1, *4
*1
POWER DISSIPATION RATING
PACKAGE
PD
j-a j-c ( Ta = 25 C)
48 pin Plastic Quad Flat Package with Heat
Sink (QFP Type)
51.6 C / W
4.1 C / W
2.425 W
PD
( Ta = 85 C )
1.261 W
Notes
*1
Note: For the actual usage, please refer to the PD-Ta characteristics diagram in the package specification, follow the power supply
voltage, load and ambient temperature conditions to ensure that there is enough margin and the thermal design does not
exceed the allowable value.
*1 : Glass-Epoxy(4 layers): 50500.8 (mm) , heat dissipation Die-pad , the state where is mounted with solder.
CAUTION
Although this has limited built-in ESD protection circuit, but permanent damage may occur on it.
Therefore, proper ESD precautions are recommended to avoid electrostatic damage to the MOS gates
Established : 2017-06-28
Revised : ####-##-##
Page 2 of 26


Part Number AN33017UA
Description 1-channel DC-DC Step down Regulator integrated N-channel Power MOSFET
Maker Panasonic
Total Page 27 Pages
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