STMICROELECTRONICS KF33B

KFxxB
Very low drop voltage regulators with inhibit
Features
■
Very low dropout voltage (0.4 V)
■
Very low quiescent current (typ. 50 µA in OFF
mode, 500 µA in ON mode)
■
Output current up to 500 mA
■
Logic-controlled electronic shutdown
■
Output voltages of 1.5; 2.5; 3.3; 4; 5; 8 V
■
Internal current and thermal limit
■
Only 2.2 µF for stability
■
Available in ± 2 % accuracy at 25 °C
■
Supply voltage rejection: 70 db (typ.)
■
Temperature range: -40 to 125 °C
DPAK
SO-8
Description
The KFxx series are very low drop regulators
available in SO-8 package and in a wide range of
output voltages.
The very low drop voltage (0.4 V) and the very low
quiescent current make them particularly
suitable for low noise, low power applications and
specially in battery powered systems.
A shutdown logic control function is available (pin
5, TTL compatible). This means that when the
device is used as a local regulator, it is possible to
put a part of the board in standby, decreasing the
total power consumption. It requires only a 2.2 µF
capacitor for stability allowing space and cost
saving.
Table 1.
Device summary
Part numbers
February 2008
KF15B
KF40B
KF25B
KF50B
KF33B
KF80B
Rev 11
1/20
www.st.com
20
Contents
KFxxB
Contents
1
Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2
Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3
Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
4
Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
5
Typical performance characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
6
Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
7
Order codes
8
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
2/20
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
KFxxB
Diagram
1
Diagram
Figure 1.
Schematic diagram
3/20
Pin configuration
KFxxB
2
Pin configuration
Figure 2.
Pin connections (top view)
SO-8
4/20
DPAK
KFxxB
Maximum ratings
3
Maximum ratings
Table 2.
Absolute maximum ratings
Symbol
Parameter
Value
Unit
-0.5 to 20
V
VI
DC input voltage
IO
Output current
Internally Limited
PTOT
Power dissipation
Internally Limited
TSTG
Storage temperature range
-40 to 150
°C
TOP
Operating junction temperature range
-40 to 125
°C
Note:
Absolute maximum ratings are those values beyond which damage to the device may occur.
Functional operation under these condition is not implied.
Table 3.
Thermal data
Symbol
RthJC
Figure 3.
Parameter
Thermal resistance junction-case
DPAK
SO-8
Unit
8
20
°C/W
Test circuit
5/20
Electrical characteristics
KFxxB
4
Electrical characteristics
Table 4.
Electrical characteristics for KF15 (refer to the test circuits, TJ = 25 °C, CI = 0.1 µF,
CO = 2.2 µF unless otherwise specified.)
Symbol
Parameter
VO
Output voltage
VI
Operating input voltage
IO
Output current limit
Test conditions
Min.
Typ.
Max.
IO = 50 mA, VI = 3.5 V
1.47
1.5
1.53
IO = 50 mA, VI = 3.5 V, Ta = -25 to 85°C
1.44
1.56
IO = 500 mA
2.5
20
Unit
V
1
V
A
ΔVO
Line regulation
VI = 2.5 to 20 V, IO = 5 mA
2
12
mV
ΔVO
Load regulation
VI = 2.8 V, IO = 5 to 500 mA
2
50
mV
0.5
1
VI = 2.5 to 20V, IO = 0mA
Id
Quiescent current
Supply voltage rejection
mA
VI = 2.8 to 20V, IO=500mA
VI = 6 V
SVR
ON MODE
IO = 5 mA, VI = 3.5 ± 1 V
12
OFF MODE
50
f = 120 Hz
82
f = 1 kHz
77
f = 10 kHz
60
100
µA
dB
eN
Output noise voltage
B = 10 Hz to 100 kHz
50
µV
Vd
Dropout voltage
IO = 200 mA
1
V
VIL
Control input logic low
Ta = -40 to 125°C
VIH
Control input logic high
Ta = -40 to 125°C
Control input current
VI = 6 V, VC = 6 V
Output bypass
capacitance
ESR = 0.1 to 10 Ω, IO = 0 to 500 mA
II
CO
6/20
0.8
2
2
V
V
10
µA
10
µF
KFxxB
Table 5.
Symbol
Electrical characteristics
Electrical characteristics for KF25 (refer to the test circuits, TJ = 25 °C, CI = 0.1 µF,
CO = 2.2 µF unless otherwise specified.)
Parameter
VO
Output voltage
VI
Operating input voltage
IO
Output current limit
Test conditions
Min.
Typ.
Max.
IO = 50 mA, VI = 4.5 V
2.45
2.5
2.55
IO = 50 mA, VI = 4.5 V, Ta = -25 to 85°C
2.4
Unit
V
2.6
IO = 500 mA
20
1
V
A
ΔVO
Line regulation
VI = 3.5 to 20 V, IO = 5 mA
2
12
mV
ΔVO
Load regulation
VI = 3.8 V, IO = 5 to 500 mA
2
50
mV
0.5
1
VI = 3.5 to 20V, IO = 0mA
Id
Quiescent current
Supply voltage rejection
IO = 5 mA, VI = 4.5 ± 1 V
12
OFF MODE
50
f = 120 Hz
82
f = 1 kHz
77
f = 10 kHz
60
eN
Output noise voltage
Vd
Dropout voltage
VIL
Control input logic low
Ta = -40 to 125°C
VIH
Control input logic high
Ta = -40 to 125°C
Control input current
VI = 6 V, VC = 6 V
Output bypass
capacitance
ESR = 0.1 to 10 Ω, IO = 0 to 500 mA
II
CO
mA
VI = 3.8 to 20V, IO=500mA
VI = 6 V
SVR
ON MODE
100
µA
dB
B = 10 Hz to 100 KHz
50
µV
IO = 200 mA
0.2
0.35
IO = 500 mA
0.4
0.7
V
0.8
2
2
V
V
10
µA
10
µF
7/20
Electrical characteristics
Table 6.
Symbol
KFxxB
Electrical characteristics for KF33 (refer to the test circuits, TJ = 25 °C, CI = 0.1 µF,
CO = 2.2 µF unless otherwise specified.)
Parameter
VO
Output voltage
VI
Operating input voltage
IO
Output current limit
Test conditions
Min.
Typ.
Max.
IO = 50 mA, VI = 5.3 V
3.234
3.3
3.366
IO = 50 mA, VI = 5.3 V, Ta = -25 to 85°C
3.168
Unit
V
3.432
IO = 500 mA
20
1
V
A
ΔVO
Line regulation
VI = 4.3 to 20 V, IO = 5 mA
2
12
mV
ΔVO
Load regulation
VI = 4.6 V, IO = 5 to 500 mA
2
50
mV
0.5
1
VI = 4.3 to 20V, IO = 0mA
Id
Quiescent current
Supply voltage rejection
IO = 5 mA, VI = 5.3 ± 1 V
12
OFF MODE
50
f = 120 Hz
80
f = 1 kHz
75
f = 10 kHz
60
eN
Output noise voltage
Vd
Dropout voltage
VIL
Control input logic low
Ta = -40 to 125°C
VIH
Control input logic high
Ta = -40 to 125°C
Control input current
VI = 6 V, VC = 6 V
Output bypass
capacitance
ESR = 0.1 to 10 Ω, IO = 0 to 500 mA
II
CO
8/20
mA
VI = 4.6 to 20V, IO=500mA
VI = 6 V
SVR
ON MODE
100
µA
dB
B = 10 Hz to 100 KHz
50
µV
IO = 200 mA
0.2
0.35
IO = 500 mA
0.4
0.7
V
0.8
2
2
V
V
10
µA
10
µF
KFxxB
Table 7.
Symbol
Electrical characteristics
Electrical characteristics for KF40 (refer to the test circuits, TJ = 25 °C, CI = 0.1 µF,
CO = 2.2 µF unless otherwise specified.)
Parameter
VO
Output voltage
VI
Operating input voltage
IO
Output current limit
Test conditions
Min.
Typ.
Max.
IO = 50 mA, VI = 6 V
3.92
4
4.08
IO = 50 mA, VI = 6 V, Ta = -25 to 85°C
3.84
Unit
V
4.16
IO = 500 mA
20
1
V
A
ΔVO
Line regulation
VI = 5 to 20 V, IO = 5 mA
3
18
mV
ΔVO
Load regulation
VI = 5.3 V, IO = 5 to 500 mA
2
50
mV
0.5
1
VI = 5 to 20V, IO = 0mA
Id
Quiescent current
Supply voltage rejection
IO = 5 mA, VI = 6 ± 1 V
12
OFF MODE
50
f = 120 Hz
78
f = 1 kHz
73
f = 10 kHz
60
eN
Output noise voltage
Vd
Dropout voltage
VIL
Control input logic low
Ta = -40 to 125°C
VIH
Control input logic high
Ta = -40 to 125°C
Control input current
VI = 6 V, VC = 6 V
Output bypass
capacitance
ESR = 0.1 to 10 Ω, IO = 0 to 500 mA
II
CO
mA
VI = 5.3 to 20V, IO=500mA
VI = 6 V
SVR
ON MODE
100
µA
dB
B = 10 Hz to 100 KHz
50
µV
IO = 200 mA
0.2
0.35
IO = 500 mA
0.4
0.7
V
0.8
2
2
V
V
10
µA
10
µF
9/20
Electrical characteristics
Table 8.
Symbol
KFxxB
Electrical characteristics for KF50 (refer to the test circuits, TJ = 25 °C, CI = 0.1 µF,
CO = 2.2 µF unless otherwise specified.)
Parameter
VO
Output voltage
VI
Operating input voltage
IO
Output current limit
Test conditions
Min.
Typ.
Max.
IO = 50 mA, VI = 7 V
4.9
5
5.1
IO = 50 mA, VI = 7 V, Ta = -25 to 85°C
4.8
Unit
V
5.2
IO = 500 mA
20
1
V
A
ΔVO
Line regulation
VI = 6 to 20 V, IO = 5 mA
3
18
mV
ΔVO
Load regulation
VI = 6.3 V, IO = 5 to 500 mA
2
50
mV
0.5
1
VI = 6 to 20V, IO = 0mA
Id
Quiescent current
Supply voltage rejection
IO = 5 mA, VI = 7 ± 1 V
12
OFF MODE
50
f = 120 Hz
76
f = 1 kHz
71
f = 10 kHz
60
eN
Output noise voltage
Vd
Dropout voltage
VIL
Control input logic low
Ta = -40 to 125°C
VIH
Control input logic high
Ta = -40 to 125°C
Control input current
VI = 6 V, VC = 6 V
Output bypass
capacitance
ESR = 0.1 to 10 Ω, IO = 0 to 500 mA
II
CO
10/20
mA
VI = 6.3 to 20V, IO=500mA
VI = 6 V
SVR
ON MODE
100
µA
dB
B = 10 Hz to 100 KHz
50
µV
IO = 200 mA
0.2
0.35
IO = 500 mA
0.4
0.7
V
0.8
2
2
V
V
10
µA
10
µF
KFxxB
Table 9.
Symbol
Electrical characteristics
Electrical characteristics for KF80 (refer to the test circuits, TJ = 25 °C, CI = 0.1 µF,
CO = 2.2 µF unless otherwise specified.)
Parameter
VO
Output voltage
VI
Operating input voltage
IO
Output current limit
Test conditions
Min.
Typ.
Max.
IO = 50 mA, VI = 10 V
7.84
8
8.16
IO = 50 mA, VI = 10 V, Ta = -25 to 85°C
7.68
Unit
V
8.32
IO = 500 mA
20
1
V
A
ΔVO
Line regulation
VI = 9 to 20 V, IO = 5 mA
4
24
mV
ΔVO
Load regulation
VI = 9.3 V, IO = 5 to 500 mA
2
50
mV
0.7
1.5
VI = 9 to 20V, IO = 0mA
Id
Quiescent current
Supply voltage rejection
IO = 5 mA, VI = 10 ± 1 V
12
OFF MODE
70
f = 120 Hz
72
f = 1 kHz
67
f = 10 kHz
60
eN
Output noise voltage
Vd
Dropout voltage
VIL
Control input logic low
Ta = -40 to 125°C
VIH
Control input logic high
Ta = -40 to 125°C
Control input current
VI = 6 V, VC = 6 V
Output bypass
capacitance
ESR = 0.1 to 10 Ω, IO = 0 to 500 mA
II
CO
mA
VI = 9.3 to 20V, IO=500mA
VI = 9 V
SVR
ON MODE
140
µA
dB
B = 10 Hz to 100 KHz
50
µV
IO = 200 mA
0.2
0.35
IO = 500 mA
0.4
0.7
V
0.8
2
2
V
V
10
µA
10
µF
11/20
Typical performance characteristics
KFxxB
5
Typical performance characteristics
Figure 4.
(unless otherwise specified VO(NOM) = 3.3 V)
Dropout voltage vs output current Figure 5.
Dropout voltage vs temperature
Figure 6.
Supply current vs input voltage
Figure 7.
Supply current vs input voltage
Figure 8.
Short circuit current vs input
voltage
Figure 9.
Supply current vs temperature
12/20
KFxxB
6
Package mechanical data
Package mechanical data
In order to meet environmental requirements, ST offers these devices in ECOPACK®
packages. These packages have a lead-free second level interconnect. The category of
second Level Interconnect is marked on the package and on the inner box label, in
compliance with JEDEC Standard JESD97. The maximum ratings related to soldering
conditions are also marked on the inner box label. ECOPACK is an ST trademark.
ECOPACK specifications are available at: www.st.com.
13/20
Package mechanical data
KFxxB
SO-8 mechanical data
Dim.
mm.
Min.
Typ.
inch.
Max.
Min.
Typ.
Max.
A
1.35
1.75
0.053
0.069
A1
0.10
0.25
0.04
0.010
A2
1.10
1.65
0.043
0.065
B
0.33
0.51
0.013
0.020
C
0.19
0.25
0.007
0.010
D
4.80
5.00
0.189
0.197
E
3.80
4.00
0.150
0.157
e
1.27
0.050
H
5.80
6.20
0.228
0.244
h
0.25
0.50
0.010
0.020
L
0.40
1.27
0.016
0.050
k
ddd
8° (max.)
0.1
0.04
0016023/C
14/20
KFxxB
Package mechanical data
DPAK mechanical data
mm.
inch.
Dim.
Min.
A
A1
A2
B
b4
C
C2
D
D1
E
E1
e
e1
H
L
(L1)
L2
L4
R
V2
Typ.
2.2
0.9
0.03
0.64
5.2
0.45
0.48
6
Max.
Min.
2.4
1.1
0.23
0.9
5.4
0.6
0.6
6.2
0.086
0.035
0.001
0.025
0.204
0.017
0.019
0.236
6.6
0.252
5.1
6.4
0.260
0.173
0.368
0.039
2.8
0.8
0.181
0.397
0.110
0.031
1
0.023
0.2
0°
0.094
0.043
0.009
0.035
0.212
0.023
0.023
0.244
0.185
0.090
4.6
10.1
0.6
Max.
0.200
4.7
2.28
4.4
9.35
1
Typ.
0.039
0.008
8°
0°
8°
0068772-F
15/20
Package mechanical data
KFxxB
Tape & reel SO-8 mechanical data
mm.
inch.
Dim.
Min.
A
Max.
Min.
330
13.2
Typ.
Max.
12.992
C
12.8
D
20.2
0.795
N
60
2.362
T
16/20
Typ.
0.504
22.4
0.519
0.882
Ao
8.1
8.5
0.319
0.335
Bo
5.5
5.9
0.216
0.232
Ko
2.1
2.3
0.082
0.090
Po
3.9
4.1
0.153
0.161
P
7.9
8.1
0.311
0.319
KFxxB
Package mechanical data
Tape & reel DPAK-PPAK mechanical data
mm.
inch.
Dim.
Min.
Typ.
A
Max.
Min.
Typ.
330
13.0
12.992
C
12.8
D
20.2
0.795
N
60
2.362
T
13.2
Max.
0.504
0.512
22.4
0.519
0.882
Ao
6.80
6.90
7.00
0.268
0.272
0.2.76
Bo
10.40
10.50
10.60
0.409
0.413
0.417
Ko
2.55
2.65
2.75
0.100
0.104
0.105
Po
3.9
4.0
4.1
0.153
0.157
0.161
P
7.9
8.0
8.1
0.311
0.315
0.319
17/20
Order codes
KFxxB
7
Order codes
Table 10.
Order codes
Packages
Output voltage
SO-8 (tape and reel)
KF15BDT-TR
1.5 V
KF25BD-TR
KF25BDT-TR
2.5 V
KF33BD-TR
KF33BDT-TR
3.3 V
KF40BDT-TR
4V
KF50BDT-TR
5V
KF80BDT-TR
8V
KF50BD-TR
18/20
DPAK (tape and reel)
KFxxB
Revision history
8
Revision history
Table 11.
Document revision history
Date
Revision
Changes
06-Jun-2007
9
Order codes updated.
14-Dec-2007
10
Modified: Table 10.
21-Feb-2008
11
Modified: Table 10 on page 18.
19/20
KFxxB
Please Read Carefully:
Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the
right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any
time, without notice.
All ST products are sold pursuant to ST’s terms and conditions of sale.
Purchasers are solely responsible for the choice, selection and use of the ST products and services described herein, and ST assumes no
liability whatsoever relating to the choice, selection or use of the ST products and services described herein.
No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted under this document. If any part of this
document refers to any third party products or services it shall not be deemed a license grant by ST for the use of such third party products
or services, or any intellectual property contained therein or considered as a warranty covering the use in any manner whatsoever of such
third party products or services or any intellectual property contained therein.
UNLESS OTHERWISE SET FORTH IN ST’S TERMS AND CONDITIONS OF SALE ST DISCLAIMS ANY EXPRESS OR IMPLIED
WARRANTY WITH RESPECT TO THE USE AND/OR SALE OF ST PRODUCTS INCLUDING WITHOUT LIMITATION IMPLIED
WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE (AND THEIR EQUIVALENTS UNDER THE LAWS
OF ANY JURISDICTION), OR INFRINGEMENT OF ANY PATENT, COPYRIGHT OR OTHER INTELLECTUAL PROPERTY RIGHT.
UNLESS EXPRESSLY APPROVED IN WRITING BY AN AUTHORIZE REPRESENTATIVE OF ST, ST PRODUCTS ARE NOT DESIGNED,
AUTHORIZED OR WARRANTED FOR USE IN MILITARY, AIR CRAFT, SPACE, LIFE SAVING, OR LIFE SUSTAINING APPLICATIONS,
NOR IN PRODUCTS OR SYSTEMS, WHERE FAILURE OR MALFUNCTION MAY RESULT IN PERSONAL INJURY, DEATH, OR
SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE.
Resale of ST products with provisions different from the statements and/or technical features set forth in this document shall immediately void
any warranty granted by ST for the ST product or service described herein and shall not create or extend in any manner whatsoever, any
liability of ST.
ST and the ST logo are trademarks or registered trademarks of ST in various countries.
Information in this document supersedes and replaces all information previously supplied.
The ST logo is a registered trademark of STMicroelectronics. All other names are the property of their respective owners.
© 2008 STMicroelectronics - All rights reserved
STMicroelectronics group of companies
Australia - Belgium - Brazil - Canada - China - Czech Republic - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan Malaysia - Malta - Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States of America
www.st.com
20/20