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HT7827 [HOLTEK]

500mA TinyPowerTM LDO; 500毫安TinyPowerTM LDO
HT7827
型号： HT7827
厂家： HOLTEK SEMICONDUCTOR INC    HOLTEK SEMICONDUCTOR INC
描述：

500mA TinyPowerTM LDO
500毫安TinyPowerTM LDO
文件： 总11页 (文件大小：121K)
中文：  中文翻译
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HT78XX Series  
500mA TinyPowerTM LDO  
Features  
·
·
Output voltage ranges: Fixed range of 1.8V, 2.5V,  
Low quiescent current: 5mA (typ.)  
2.7V, 3.0V, 3.3V, 5.0V type.  
·
Current limiting  
·
Highly accuracy: ±2%  
·
Over-temperature shutdown  
·
Low voltage drop: 360mV (typ.),  
·
SOT-89, TO-92 Packages  
V
OUT=5.0V at 500mA  
·
Guaranteed output current: 500mA  
Applications  
·
·
Battery powered systems  
PCMCIA cards  
·
·
Personal Digital Assistants  
Personal Communication Equipment  
·
Peripheral cards  
General Description  
The HT78XX series of positive, linear regulators fea-  
tures low quiescent current (5mA typ.) with low dropout  
voltage, making them ideal for battery applications. The  
devices are capable of supplying 500mA of output cur-  
rent continuously.  
as fixed voltage regulators, these devices can be used  
with external components to obtain variable voltages  
and currents.  
These rugged devices have Thermal Shutdown and  
Current Limiting to prevent device failure under the  
²Worst² of operating conditions.  
They are available with several fixed output voltages  
ranging from 1.8V to 5.0V. Although designed primarily  
Selection Table  
Part No.  
HT7818  
HT7825  
HT7827  
HT7830  
HT7833  
HT7850  
Output Voltage  
1.8V  
Tolerance  
Package  
2.5V  
2.7V  
SOT-89  
TO-92  
±2%  
3.0V  
3.3V  
5.0V  
Block Diagram  
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Rev. 1.00  
1
March 2, 2007  
HT78XX Series  
Pin Assignment  
S
O
T
-
8
9
T
O
-
9
2
H
T
7
8
X
X
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T
7
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Absolute Maximum Ratings*  
Maximum Supply Voltage ............................ up to 8.5V  
Storage Temperature .......................... -50°C to 125°C  
Operating Temperature ......................... -40°C to 85°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 in-  
dicate 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.  
Thermal Information  
Symbol  
Parameter  
Package  
SOT-89  
TO-92  
Max.  
Unit  
Thermal Resistance  
(Junction to Ambient)  
(Assume no ambient airflow,  
no heat sink)  
200  
°C/W  
qJA  
200  
°C/W  
SOT-89  
TO-92  
0.50  
0.50  
W
W
PD  
Power Dissipation  
Note: PD is measured at Ta= 25°C  
Rev. 1.00  
2
March 2, 2007  
HT78XX Series  
Electrical Characteristics  
Tj=25°C, VIN=VOUT+1.0V, IO=1mA, unless otherwise specified  
Symbol  
VIN  
Parameter  
Input Voltage  
Test Conditions  
Min.  
¾
Typ.  
¾
Max.  
8
Unit  
V
¾
¾
Output Voltage Tolerance  
Quiescent Current  
2
%
DVOUT  
-2  
¾
¾
ISS  
IO=0mA  
1mA£IOUT£500mA  
VO£1.8V  
5
7
mA  
Load Regulation (Note1)  
0.004  
800  
500  
360  
0.2  
¾
0.008  
1200  
650  
500  
0.3  
¾
%/mA  
DVLOAD  
¾
¾
DVOUT=2%  
OUT=500mA  
VDROP  
Dropout Voltage (Note2)  
mV  
2.5V£VO£2.7V  
3.0V£VO£5.0V  
¾
I
¾
Line Regulation  
%/V  
mA  
DVLINE  
VOUT+1.0V£VIN£8.0V  
DVOUT=10%  
¾
ILIM  
Current Limit (Note3)  
500  
D
V
O U T  
Temperature Coefficient  
-40°C<Ta<85°C  
¾
±0.8  
¾
mV/°C  
D
T
a
Note: 1. 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  
.
2. 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+1V with a fixed load.  
3. Current limit is measured by pulsing for a short time.  
Application Circuits  
Basic Circuits  
V
I
N
V
O U T  
V
I
N
V
O
U
T
H
T
7
8
X
X
S
e
r
i
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s
G
N
D
C
1
C
2
1
m
F
m
2 . 2 F  
C
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n
C
o
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m
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n
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Typical Application Circuits  
·
High output current positive voltage regulator  
I
C 1  
T
r
1
V
I
N
V
O U T  
V
I
N
V
O
U
T
H
T
7
8
X
X
S
e
r
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s
R
1
I
R
E
G
I
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G
N
D
C
1
C
2
1
0
m
F
m
1 0 F  
C
o
m
m
o
n
C
o
m
m
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S
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V
B
E
1
R
1
=
,
I
C 1  
R
E
G
b
( 1 + )  
I
O
=
I
C
1
+
I
R
E
G
Rev. 1.00  
3
March 2, 2007  
HT78XX Series  
·
Increased Output voltage Circuit  
V
I
N
V
O U T  
V
I
N
V
O
U
T
H
T
7
8
X
X
S
e
r
i
e
s
C
1
C
2
V
X
X
R
1
1
0
m
F
m
1 0 F  
G
N
D
I
S S  
R
2
C
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m
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S
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G
N
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C
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m
o
n
R2  
VOUT = VXX (1+  
) + ISS R2  
R1  
·
Dual Supply Circuit  
I
C
1
V
I
N
V
I
N
V
O
U
T
H
T
7
8
X
X
V
O
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T
1
S
e
r
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s
C
3
V
X
X
1
I
C
2
G
N
D
1
m
0 F  
V
I
N
H
T
7
8
X
X
V
O
U
T
S
e
r
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s
V
O
U
T
2
C
1
C
2
G
N
D
V
X
X
2
R
1
1
0
m
F
m
1 0 F  
C
o
m
m
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C
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m
m
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S
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p
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G
N
D
VOUT1 = VXX2 + VXX1  
VOUT2 = VXX2  
·
Tracking Voltage Regulator  
V
I
N
V
O U T  
V
I
N
V
O
U
T
H
T
7
8
X
X
S
e
r
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s
C
1
C
2
R
A
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1
m
0 F  
1
m
0 F  
S
i
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p
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t
G
N
D
R
B
-
V
I
N
-
V
R
A
-VO = VO  
x
RB  
Rev. 1.00  
4
March 2, 2007  
HT78XX Series  
Package Information  
3-Pin SOT-89 Outline Dimensions  
I
A
B
J
C
E
D
G
F
H
Dimensions in mil  
Nom.  
Symbol  
Min.  
173  
64  
Max.  
181  
72  
A
B
C
D
E
F
G
H
I
¾
¾
¾
¾
¾
¾
¾
59  
¾
¾
90  
102  
47  
35  
155  
14  
167  
19  
17  
22  
¾
¾
55  
63  
J
14  
17  
Rev. 1.00  
5
March 2, 2007  
HT78XX Series  
3-Pin TO-92 Outline Dimensions  
A
B
D
C
E
F
G
H
Dimensions in mil  
Nom.  
Symbol  
Min.  
170  
170  
500  
11  
Max.  
200  
200  
¾
A
B
C
D
E
F
G
H
I
¾
¾
¾
¾
¾
¾
¾
¾
¾
¾
20  
90  
110  
55  
45  
45  
65  
130  
8
160  
18  
a
4°  
6°  
Rev. 1.00  
6
March 2, 2007  
HT78XX Series  
Product Tape and Reel Specifications  
Reel Dimensions  
D
T
2
C
A
B
T
1
SOT-89  
Symbol  
Description  
Dimensions in mm  
A
B
Reel Outer Diameter  
Reel Inner Diameter  
Spindle Hole Diameter  
Key Slit Width  
180±1.0  
62±1.5  
C
12.75+0.15  
1.9±0.15  
12.4+0.2  
17-0.4  
D
T1  
T2  
Space Between Flange  
Reel Thickness  
Rev. 1.00  
7
March 2, 2007  
HT78XX Series  
TO-92 Reel Dimensions (Unit: mm)  
P
a
c
k
a
g
e
U
p
,
F
l
a
t
S
i
d
e
U
p
3
0
P
a
c
k
a
g
e
U
p
,
F
l
a
t
S
i
d
e
D
o
w
n
5
8
4
3
8
8
3
6
0
Rev. 1.00  
8
March 2, 2007  
HT78XX Series  
Carrier Tape Dimensions  
P
0
P
1
t
D
E
F
W
B
0
C
D
1
P
K
0
A
0
SOT-89  
Symbol  
Description  
Dimensions in mm  
12.0+0.3  
W
Carrier Tape Width  
-0.1  
P
E
Cavity Pitch  
8.0±0.1  
1.75±0.1  
5.5±0.05  
1.5+0.1  
1.5+0.1  
4.0±0.1  
2.0±0.10  
4.8±0.1  
4.5±0.1  
1.8±0.1  
0.30±0.013  
9.3  
Perforation Position  
F
Cavity to Perforation (Width Direction)  
Perforation Diameter  
Cavity Hole Diameter  
Perforation Pitch  
D
D1  
P0  
P1  
A0  
B0  
K0  
t
Cavity to Perforation (Length Direction)  
Cavity Length  
Cavity Width  
Cavity Depth  
Carrier Tape Thickness  
Cover Tape Width  
C
Rev. 1.00  
9
March 2, 2007  
HT78XX Series  
TO-92 Carrier Tape Dimensions  
P
D
h
W
2
H
1
H
H
0
t
l
1
W
0
W
1
W
F
1
F
2
D
0
P
2
P
0
TO-92  
Symbol  
Description  
Dimensions in mm  
(2.5)  
I1  
P
Taped Lead Length  
Component Pitch  
Perforation Pitch  
12.7±1.0  
P0  
P2  
12.7±0.3  
Component to Perforation (Length Direction)  
Lead Spread  
6.35±0.4  
2.5+0.4  
F1  
F2  
-0.1  
2.5+0.4  
Lead Spread  
-0.1  
Component Alignment  
Carrier Tape Width  
Dh  
0±0.1  
18.0+1.0  
W
-0.5  
W0  
W1  
W2  
H0  
H1  
D0  
Hold-down Tape Width  
Perforation Position  
6.0±0.5  
9.0±0.5  
Hold-down Tape Position  
Lead Clinch Height  
(0.5)  
16.0±0.5  
Less than 24.7  
4.0±0.2  
Component Height  
Perforation Diameter  
Taped Lead Thickness  
Component Base Height  
t
0.7±0.2  
H
19.0±0.5  
Note:  
Thickness less than 0.38±0.05mm~0.5mm  
P0 Accumulated pitch tolerance: ±1mm/20pitches.  
( ) Bracketed figures are for consultation only  
Rev. 1.00  
10  
March 2, 2007  
HT78XX 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  
Holtek Semiconductor Inc. (Taipei Sales Office)  
4F-2, No. 3-2, YuanQu St., Nankang Software Park, Taipei 115, Taiwan  
Tel: 886-2-2655-7070  
Fax: 886-2-2655-7373  
Fax: 886-2-2655-7383 (International sales hotline)  
Holtek Semiconductor Inc. (Shanghai Sales Office)  
7th Floor, Building 2, No.889, Yi Shan Rd., Shanghai, China 200233  
Tel: 86-21-6485-5560  
Fax: 86-21-6485-0313  
http://www.holtek.com.cn  
Holtek Semiconductor Inc. (Shenzhen Sales Office)  
5/F, Unit A, Productivity Building, Cross of Science M 3rd Road and Gaoxin M 2nd Road, Science Park, Nanshan District,  
Shenzhen, China 518057  
Tel: 86-755-8616-9908, 86-755-8616-9308  
Fax: 86-755-8616-9722  
Holtek Semiconductor Inc. (Beijing Sales Office)  
Suite 1721, Jinyu Tower, A129 West Xuan Wu Men Street, Xicheng District, Beijing, China 100031  
Tel: 86-10-6641-0030, 86-10-6641-7751, 86-10-6641-7752  
Fax: 86-10-6641-0125  
Holtek Semiconductor Inc. (Chengdu Sales Office)  
709, Building 3, Champagne Plaza, No.97 Dongda Street, Chengdu, Sichuan, China 610016  
Tel: 86-28-6653-6590  
Fax: 86-28-6653-6591  
Holtek Semiconductor (USA), Inc. (North America Sales Office)  
46729 Fremont Blvd., Fremont, CA 94538  
Tel: 1-510-252-9880  
Fax: 1-510-252-9885  
http://www.holtek.com  
Copyright Ó 2007 by HOLTEK SEMICONDUCTOR INC.  
The information appearing in this Data Sheet is believed to be accurate at the time of publication. However, Holtek as-  
sumes 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. 1.00  
11  
March 2, 2007  

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