Doc No.
TA4-EA-06057
Revision.
3
Product Standards
AN30888A
http://www.semicon.panasonic.co.jp/en/
High Brightness LED Driver IC
FEATURES
Battery operation
: 3 V to 20 V
DESCRIPTION
AN30888A is a Boost / Buck-Boost / Buck DCDC
Output current range : 0 A to a few Amperes depending on controller that drives an external power NMOS switch.
rating of external NMOS and mode It is suitable for driving high brightness LED for LED
lighting applications.
of operation
Current mode control architecture
LED dimming function available by using PWM signal
32 mV / 202 mV reference voltage
Low standby current
Configurable as either Boost / Buck-Boost / Buck mode
converter
Built-in various protection circuit : Under voltage lock out
Over voltage protection
Soft start function
16 pin Plastic Shrink Small Outline Package (SSOP Type)
APPLICATIONS
・LED
lighting module
・LED
lantern applications
・White
LED backlighting for LCD panel
・White
LED flash light driving applications
・General
LED back lighting
TYPICAL APPLICATION
Buck-Boost Mode
L
V
OUT
D
2.2 µF
11 SW
I
PK
6 CS
V
FB
R
CS
9 GNDP
VFB_SEL
5
Reference
voltage
8 OVP
I
LED
R1
R2
1
VREG
1 µF
VIN
V
IN
ENB
4
BGR
VREG
3.65 V
1.262 V
14
EN
UVLO
CONTROL
PWM
12
Notes : This application circuit is an example. The operation of the mass production set is not guaranteed. Customers shall
perform enough evaluation and verification on the design of mass production set. Customers shall be fully responsible
for the incorporation of the above application circuit and information in the design of the equipment.
GND
16
Page 1 of 21
Established : 2012-02-28
Revised
: 2013-02-18
Doc No.
TA4-EA-06057
Revision.
3
Product Standards
AN30888A
TYPICAL APPLICATION ( Continued )
Boost Mode
L
V
OUT
D
16 VREG
1 µF
2.2 µF
VIN
V
IN
ENB
4
BGR
VREG
1.262 V
3.65 V
14
EN
UVLO
11 SW
I
PK
CONTROL
PWM
12
6 CS
V
FB
R
CS
I
LED
9
VFB_SEL
5
Reference
voltage
GNDP
R1
8 OVP
R2
GND
Notes:
This application circuit is an example. The operation of the mass production set is not guaranteed. Customers shall
perform enough evaluation and verification on the design of mass production set. Customers shall be fully
responsible for the incorporation of the above application circuit and information in the design of the equipment.
1
Page 2 of 21
Established : 2012-02-28
Revised
: 2013-02-18
Doc No.
TA4-EA-06057
Revision.
3
Product Standards
AN30888A
TYPICAL APPLICATION ( Continued )
Buck Mode
16 VREG
1 µF
D
L
2.2 µF
VIN
V
IN
ENB
4
BGR
VREG
1.262 V
3.65 V
14
EN
UVLO
11 SW
I
PK
CONTROL
6 CS
I
LED
V
FB
R
CS
V
OUT
PWM
12
9 GNDP
VFB_SEL
5
Reference
voltage
8 OVP
Notes:
This application circuit is an example. The operation of the mass production set is not guaranteed. Customers shall
perform enough evaluation and verification on the design of mass production set. Customers shall be fully
responsible for the incorporation of the above application circuit and information in the design of the equipment.
GND
1
Page 3 of 21
Established : 2012-02-28
Revised
: 2013-02-18
Doc No.
TA4-EA-06057
Revision.
3
Product Standards
AN30888A
ABSOLUTE MAXIMUM RATINGS
Parameter
Supply voltage
Output Current
Operating ambience temperature
Operating junction temperature
Storage temperature
Symbol
V
IN
I
OUT
T
opr
T
j
T
stg
CS, OVP
Input Voltage Range
VFB_SEL, PWM
ENB
Output Voltage Range
ESD
Note)
Rating
21
—
– 25 to + 85
– 25 to + 125
– 55 to + 125
– 0.3 to 4.3
– 0.3 to 5.5
– 0.3 to 21
– 0.3 to 4.3
2
Unit
V
mA
C
C
C
V
V
V
V
kV
Note
*1
*1
*2
*2
*2
—
—
—
—
—
SW, VREG
HBM (Human Body Model)
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: V
IN
= VIN.
The values under the condition not exceeding the above absolute maximum ratings and the power dissipation.
*2: Except for the power dissipation, operating ambient temperature, and storage temperature, all ratings are for Ta =
25C.
POWER DISSIPATION RATING
PACKAGE
16 pin Plastic Shrink Small Outline Package (SSOP Type)
Note)
JA
171.8
C
/W
PD (Ta=25
C)
0.582 W
PD (Ta=85
C)
0.233 W
For the actual usage, please refer to the P
D
-Ta characteristics diagram in the package specification, supply voltage, load
and ambient temperature conditions to ensure that there is enough margin follow the power and the thermal design does
not exceed the allowable value.
CAUTION
Although this LSI has built-in ESD protection circuit, it may still sustain permanent damage if not handled
properly. Therefore, proper ESD precautions are recommended to avoid electrostatic damage to the MOS
gates.
Page 4 of 21
Established : 2012-02-28
Revised
: 2013-02-18
Doc No.
TA4-EA-06057
Revision.
3
Product Standards
AN30888A
RECOMMENDED OPERATING CONDITIONS
Parameter
Symbol
VIN1
( Boost Mode / Buck – Boost Mode )
VIN2
( Buck Mode )
V
CS
, V
OVP
VFB_SEL, V
PWM
Input Voltage Range
V
ENB
V
SW
VREG
– 0.3
– 0.3
– 0.3
—
—
—
Min.
3
3
– 0.3
– 0.3
Typ.
6
6
—
—
Max.
12
20
VREG
5.2
VIN1
or
VIN2
5.2
4.0
Unit
V
V
V
V
V
V
V
Note
*1
*1
*2
—
*2
—
—
Supply voltage range
Output Voltage Range
Note) *1: The values under the condition not exceeding the above absolute maximum ratings and the power dissipation.
Do not apply external currents and voltages to any pin not specifically mentioned.
Voltage values, unless otherwise specified, are with respect to GND. GND is voltage for GND and GNDP.
VIN1 and VIN2 are voltage for VIN.
*2: VREG V must not be exceeded 4.3 V. VIN1 V and VIN2 V must not be exceeded 21 V.
Page 5 of 21
Established : 2012-02-28
Revised
: 2013-02-18
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