HT1086 Series 1.5A General Purpose LDO

HT1086 Series
1.5A General Purpose LDO
Features
· Output voltage ranges: Fixed range of 1.8V, 2.5V,
· Guaranteed output current: 1.5A
2.85V, 3.3V, 5.0V or adjustable type.
· Low quiescent current: 8mA (typ.)
· High accuracy: ±2%
· Integrated current limit & thermal protection circuits
· Low voltage drop: 1.3V (typ.), VOUT=5.0V at 1.5A
· SOT-223, TO-220, TO-252, TO-263 packages
Applications
· Active SCSI terminations
· Motherboard clock supplies
· Post regulator for switching power supplies
· Battery chargers
· Low voltage microcontrollers
General Description
fixed output voltage type with a range of 1.8V to 5V. Internal current limit and thermal protection circuits provide protection against overload conditions that could
create excessive junction temperatures.
The HT1086 devices are a series of three-terminal high
current low voltage regulators. They can deliver an output current of 1.5A and can accept input voltages up to
12V. The devices are available in both adjustable and
Selection Table
Note:
Part No.
Output Voltage
HT1086-ADJ
Adjust
HT1086-18
1.8V
HT1086-25
2.5V
HT1086-28
2.85V
HT1086-33
3.3V
HT1086-50
5.0V
Package
Marking
SOT-223
TO-220
TO-252
TO-263
HT1086-ADJ
HT1086-18
HT1086-25
HT1086-28
HT1086-33
HT1086-50
For lead free devices, a ²#² mark is suffixed at the end of the date code.
Block Diagram
V
IN
V
O U T
C u rre n t
L im itin g
A m p lifie r
T h e rm a l
P r o te c tio n
E rro r
A m p .
B a n d g a p
R e fe re n c e
A D J
G N D
Rev. 1.10
1
February 29, 2008
HT1086 Series
Pin Assignment
S O T -2 2 3
1
T O -2 2 0
H T 1 0 8 6 -X X
2
T O -2 5 2
H T 1 0 8 6 -X X
H T 1 0 8 6 -X X
3
H T 1 0 8 6 -X X
1
G N D /
A D J
V O U T
T O -2 6 3
2
1
2
1
2
3
3
V O U T
3
V IN
V O U T
G N D /
A D J
G N D / V O U T
A D J
G N D /
A D J
V IN
V IN
V IN
V IN
V IN
V O U T
G N D /A D J
V IN
V O U T
G N D /A D J
V IN
V O U T
G N D /A D J
V O U T
G N D /A D J
Absolute Maximum Ratings*
Input Supply Voltage ..................VSS-0.3V to VSS+13V
Storage Temperature ...........................-50°C to 125°C
Note: These are stress ratings only. Stresses exceeding the range specified under ²Absolute Maximum Ratings² may
cause substantial damage to the device. Functional operation of this device at other conditions beyond those listed
in the specification is not implied and prolonged exposure to extreme conditions may affect device reliability.
²*² Absolute maximum ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is intended to be functional, but do not guarantee specific performance limits.
The guaranteed specifications apply only for the test conditions listed.
Recommended Operating Conditions
Input Supply Voltage ..................VSS-0.3V to VSS+12V
Ambient Temperature ............................-40°C to 85°C
Thermal Information
Symbol
qJA
PD
Parameter
Thermal Resistance
(Junction to Ambient)
Power Dissipation
Package
Max.
Unit
SOT-223
134
°C/W
TO-220
50
°C/W
TO-252
80
°C/W
TO-263
60
°C/W
SOT-223
0.75
W
TO-220
2
W
TO-252
1.27
W
TO-263
1.67
W
Note: PD is measured at Ta= 25°C
Rev. 1.10
2
February 29, 2008
HT1086 Series
Electrical Characteristics
Symbol
VREF
TJ=25°C, VIN=VOUT+1.5V, IO=10mA, unless otherwise specified (see note 1)
Parameter
Reference Voltage
VOUT
Output Voltage
Test Conditions
Min.
Typ.
Max.
Unit
2.75V £ VIN £ 12V
1.225
1.25
1.275
V
HT1086-18
1.764
1.800
1.836
V
HT1086-25
2.45
2.50
2.55
V
HT1086-28
2.793
2.850
2.907
V
HT1086-33
3.234
3.300
3.366
V
HT1086-50
4.90
5.00
5.10
V
DVLOAD
Load Regulation (see note 2)
10mA £ IOUT £ 1.5A
1
¾
30
mV
DVLINE
Line Regulation
2.75 £ VIN £ 12V
¾
0.015
0.15
%/V
VDIF
Dropout Voltage (see note 3)
DVOUT=2%, IOUT=1.5A
¾
1.3
1.5
V
ILIMIT
Current Limit (see note 4)
DVOUT=10%
1.5
2.3
¾
A
IADJ
Adjust Pin Current
(Variable Version)
2.75 £ VIN £ 12V
¾
55
120
mA
ISS
Quiescent Current
(Fixed Version)
2.75 £ VIN £ 12V
¾
8
13
mA
RR
Ripple Rejection
120Hz input ripple
COUT=22mF
¾
60
¾
dB
Temperature Coefficient
-40°C<Ta<85°C
¾
±0.4
¾
mV/°C
Note:
1. Specifications are production tested at room temperature, Ta. Specifications within the -40°C to 85°C
operating temperature range are assured by design, characterization and correlation with Statistical Quality
Controls (SQC).
2. Load regulation is measured at a constant junction temperature, using pulse testing with a low ON time and
is guaranteed up to the maximum power dissipation. Power dissipation is determined by the input/output
differential voltage and the output current. Guaranteed maximum power dissipation will not be available over
the full input/output range. The maximum allowable power dissipation at any ambient temperature is
PD = (TJ(MAX) - Ta) / qJA.
3. Dropout voltage is defined as the input voltage minus the output voltage that produces a 2% change in the
output voltage from the value at VIN = VOUT+1.5V with a fixed load.
4. Current limit is measured by pulsing for a short time.
Rev. 1.10
3
February 29, 2008
HT1086 Series
Application Circuits
Basic Circuits
· Variable voltage type
V
IN
V IN
C 1
1 0 m F
V
R 1
1 2 5 W
R E F
A D J
IA
V
O U T
V O U T
H T 1 0 8 6 -A D J
D J
C 2
1 0 m F
R 2
1 k W
C o m m o n
C o m m o n
S in g le p o in t G N D
R2
) + IADJ R2
R1
VOUT = VREF ( 1 +
Note:
C1 is required if the needed if the device is located far from filter capacitors, the recommended value is 10mF.
C2 is required for stability, the recommended value is 10mF.
R1 is required for regulation, the recommended value is 125W.
· Fixed voltage type
V
IN
V IN
G N D
C 1
1 0 m F
C o m m o n
Note:
V
V O U T
H T 1 0 8 6
S e r ie s
O U T
C 2
1 0 m F
C o m m o n
S in g le p o in t G N D
C1 is required if the needed if the device is located far from filter capacitors, the recommended value is 10mF.
C2 is required for stability, the recommended value is 10mF.
Typical Application Circuits
· 1.25~10.5V regulator
2 .7 5 £ V
IN
£ 1 2 V
C 1
1 0 m F
V IN
V
A D J
IA
V
V O U T
H T 1 0 8 6 -A D J
D J
R E F
R 1
1 2 5 W
O U T
C 2
1 0 m F
R 2
1 k W
C o m m o n
C o m m o n
S in g le p o in t G N D
Rev. 1.10
4
February 29, 2008
HT1086 Series
· Digitally selected outputs
V
IN
V IN
V
V O U T
H T 1 0 8 6 -A D J
O U T
R 1
1 2 5 W
A D J
C 1
1 0 m F
C 2
1 0 m F
R 2
R 3
R 4
R 5
R n
C o m m o n
C o m m o n
S in g le p o in t
G N D
In p u ts
N o te : R 2 c a n s e t th e m a x im u m
v o lta g e .
· High output current positive voltage regulator
IC
T r1
V
V IN
IN
1
R 1
V
V O U T
H T 1 0 8 6
S e r ie s
IR
IO
E G
G N D
C 1
1 0 m F
C 2
1 0 m F
C o m m o n
C o m m o n
S in g le p o in t G N D
R
1
V
=
IR
IO = IC
O U T
B E 1
IC
E G
-
1
+ IR
1
,
(1 + b )
E G
· Increased Output voltage Circuit
V
V IN
IN
C 1
1 0 m F
IS
S
V
V O U T
H T 1 0 8 6
S e r ie s
C 2
1 0 m F
G N D
V
X X
O U T
R 1
D 1
C o m m o n
S in g le p o in t G N D
C o m m o n
VOUT = VXX + VD1
VXX
ISS
R1 =
Rev. 1.10
5
February 29, 2008
HT1086 Series
· Dual Supply Circuit
IC 1
V
V IN
IN
IC 2
V IN
V
V
G N D
H T 1 0 8 6
S e r ie s
C 1
1 0 m F
V O U T
H T 1 0 8 6
S e r ie s
X X 1
O U T 1
C 3
1 0 m F
V O U T
V
C 2
1 0 m F
G N D
C o m m o n
R 1
V
O U T 2
X X 2
C o m m o n
S in g le p o in t G N D
VOUT1 = VXX2 + VXX1
VOUT2 = VXX2
· Tracking Voltage Regulator
V
V IN
IN
C 1
1 0 m F
V
V O U T
H T 1 0 8 6
S e r ie s
C 2
1 0 m F
G N D
R
A
R
B
O U T
S in g le p o in t G N D
-V
V
IN
-VO = VOUT x
Rev. 1.10
6
O
RB
RA
February 29, 2008
HT1086 Series
Package Information
D
q
g a u g e p la n e
s e a tin g p la n e
3-pin SOT-223 Outline Dimensions
L
E 1
E
e
A 2
A
e 1
A 1
c
b
Symbol
Rev. 1.10
Dimensions in mm
Min.
Nom.
Max.
A
¾
¾
1.8
A1
0.02
¾
0.1
A2
1.5
¾
1.7
b
0.66
¾
0.84
C
0.23
¾
0.35
D
6.3
¾
6.7
E
6.7
¾
7.3
E1
3.3
¾
3.7
e
¾
2.3
¾
e1
¾
4.6
¾
L
0.75
¾
¾
q
0°
¾
10°
7
February 29, 2008
HT1086 Series
3-pin TO-220 Outline Dimensions
A
E
C
F
H (1 )
D
1
2
3
L (1 )
L
b (1 )
e (1 )
Symbol
Rev. 1.10
C
b
J (1 )
e
Dimensions in mil
Min.
Nom.
Max.
A
170
¾
185
b
15
¾
40
b(1)
50
¾
65
C
14
¾
20
D
575
¾
610
E
395
¾
410
e
95
¾
105
e(1)
195
¾
210
F
45
¾
55
H(1)
235
¾
265
J(1)
95
¾
110
L
515
¾
560
L(1)
145
¾
155
8
February 29, 2008
HT1086 Series
3-pin TO-252 Outline Dimensions
A
E
C 1
A 1
b 2
L 2
E 1
D
H
L 1
D 1
L 3
L
b
Symbol
Rev. 1.10
e 1
C
b 1
A 2
Dimensions in mil
Min.
Nom.
Max.
A
87
¾
94
A1
35
¾
45
A2
1
¾
9
B
25
¾
35
b1
30
¾
45
b2
206
¾
215
C
18
¾
23
C1
18
¾
23
D
235
¾
245
D1
177
¾
197
E
255
¾
265
E1
165
¾
175
e1
175
¾
185
H
380
¾
410
L
20
¾
¾
L1
25
¾
40
L2
35
¾
50
L3
40
¾
60
9
February 29, 2008
HT1086 Series
3-pin TO-263 Outline Dimensions
A
E
L 2
E 1
C 2
D
1
2
D 1
L
3
L 3
L 4
0 ~ 5
L 1
A
A
e
Symbol
Rev. 1.10
B
B 2
D e ta il A
D e ta il A ( R o ta te d 9 0 )
E 2
C
Z
Dimensions in mil
Min.
Nom.
Max.
A
170
¾
185
B
28
¾
40
B2
50
¾
65
C
13
¾
20
C2
45
¾
55
D
340
¾
380
D1
220
¾
240
E
395
¾
410
E1
310
¾
340
E2
355
¾
375
e
95
¾
105
L
575
¾
625
L1
90
¾
110
L2
40
¾
55
L3
50
¾
70
L4
6
¾
14
10
February 29, 2008
HT1086 Series
Product Tape and Reel Specifications
Reel Dimensions
D
T 2
A
C
B
T 1
SOT-223
Symbol
Description
Dimensions in mm
A
Reel Outer Diameter
330±1
B
Reel Inner Diameter
62±1.5
C
Spindle Hole Diameter
12.75±0.15
D
Key Slit Width
T1
Space Between Flange
12.4+0.2
2+0.6
T2
Reel Thickness
16.4-0.4
TO-252
Symbol
Description
Dimensions in mm
A
Reel Outer Diameter
330±3
B
Reel Inner Diameter
100±2
C
Spindle Hole Diameter
13±0.5
D
Key Slit Width
2±0.5
T1
Space Between Flange
16.4+0.3
-0.2
T2
Reel Thickness
21.4+0.4
Rev. 1.10
11
February 29, 2008
HT1086 Series
TO-263
Symbol
Description
Dimensions in mm
A
Reel Outer Diameter
380±3
B
Reel Inner Diameter
80±2
C
Spindle Hole Diameter
13±0.5
D
Key Slit Width
2±0.5
T1
Space Between Flange
24±0.4
T2
Reel Thickness
28.4+0.4
Carrier Tape Dimensions
P 0
D
P 1
t
E
F
W
C
D 1
B 0
P
K 0
A 0
SOT-223
Symbol
Description
Dimensions in mm
W
Carrier Tape Width
12±0.3
P
Cavity Pitch
8±0.1
E
Perforation Position
1.75±0.1
F
Cavity to Perforation (Width Direction)
5.5±0.05
D
Perforation Diameter
1.5+0.1
D1
Cavity Hole Diameter
1.5+0.1
P0
Perforation Pitch
4±0.1
P1
Cavity to Perforation (Length Direction)
2±0.05
A0
Cavity Length
6.9±0.1
B0
Cavity Width
7.5±0.1
K0
Cavity Depth
2.1±0.1
t
Carrier Tape Thickness
0.3±0.05
C
Cover Tape Width
Rev. 1.10
9.3
12
February 29, 2008
HT1086 Series
TO-252
Symbol
Description
Dimensions in mm
W
Carrier Tape Width
16+0.3
-0.1
P
Cavity Pitch
8±0.1
E
Perforation Position
1.75±0.1
F
Cavity to Perforation (Width Direction)
7.5±0.1
D
Perforation Diameter
1.5±0.1
D1
Cavity Hole Diameter
1.5+0.25
P0
Perforation Pitch
4±0.1
P1
Cavity to Perforation (Length Direction)
2±0.1
A0
Cavity Length
6.8±0.1
B0
Cavity Width
10.4±0.1
K0
Cavity Depth
2.5±0.1
t
Carrier Tape Thickness
0.3±0.05
C
Cover Tape Width
13.3
TO-263
Symbol
Description
Dimensions in mm
W
Carrier Tape Width
24+0.3
-0.1
P
Cavity Pitch
16±0.1
E
Perforation Position
1.75±0.1
F
Cavity to Perforation (Width Direction)
11.5±0.1
D
Perforation Diameter
1.5+0.1
D1
Cavity Hole Diameter
1.5+0.25
P0
Perforation Pitch
4±0.1
P1
Cavity to Perforation (Length Direction)
2±0.1
A0
Cavity Length
10.8±0.1
B0
Cavity Width
16.1±0.1
K0
Cavity Depth
5.2±0.1
t
Carrier Tape Thickness
C
Cover Tape Width
Rev. 1.10
0.35±0.013
21.3
13
February 29, 2008
HT1086 Series
Holtek Semiconductor Inc. (Headquarters)
No.3, Creation Rd. II, Science Park, Hsinchu, Taiwan
Tel: 886-3-563-1999
Fax: 886-3-563-1189
http://www.holtek.com.tw
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Tel: 886-2-2655-7070
Fax: 886-2-2655-7373
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Tel: 86-21-6485-5560
Fax: 86-21-6485-0313
http://www.holtek.com.cn
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Tel: 86-755-8616-9908, 86-755-8616-9308
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Tel: 86-10-6641-0030, 86-10-6641-7751, 86-10-6641-7752
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46729 Fremont Blvd., Fremont, CA 94538
Tel: 1-510-252-9880
Fax: 1-510-252-9885
http://www.holtek.com
Copyright Ó 2008 by HOLTEK SEMICONDUCTOR INC.
The information appearing in this Data Sheet is believed to be accurate at the time of publication. However, Holtek assumes no responsibility arising from the use of the specifications described. The applications mentioned herein are used
solely for the purpose of illustration and Holtek makes no warranty or representation that such applications will be suitable
without further modification, nor recommends the use of its products for application that may present a risk to human life
due to malfunction or otherwise. Holtek¢s products are not authorized for use as critical components in life support devices
or systems. Holtek reserves the right to alter its products without prior notification. For the most up-to-date information,
please visit our web site at http://www.holtek.com.tw.
Rev. 1.10
14
February 29, 2008