KF50BD-TR STMicroelectronics, KF50BD-TR Datasheet

IC REG VLDO 5.0V INHIB 8-SOIC

KF50BD-TR

Manufacturer Part Number
KF50BD-TR
Description
IC REG VLDO 5.0V INHIB 8-SOIC
Manufacturer
STMicroelectronics
Datasheet

Specifications of KF50BD-TR

Regulator Topology
Positive Fixed
Voltage - Output
5V
Voltage - Input
Up to 20V
Voltage - Dropout (typical)
0.4V @ 500mA
Number Of Regulators
1
Current - Output
500mA
Operating Temperature
-40°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
8-SOIC (3.9mm Width)
Number Of Outputs
1
Polarity
Positive
Input Voltage Max
20 V
Output Voltage
5 V
Output Type
Fixed
Dropout Voltage (max)
0.35 V
Output Current
500 mA
Line Regulation
18 mV
Load Regulation
50 mV
Voltage Regulation Accuracy
2 %
Maximum Operating Temperature
+ 125 C
Mounting Style
SMD/SMT
Minimum Operating Temperature
- 40 C
Primary Input Voltage
7V
Dropout Voltage Vdo
1V
No. Of Outputs
1
No. Of Pins
8
Operating Temperature Range
-40°C To +125°C
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Current - Limit (min)
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
497-7758-2
KF50BD-TR
Features
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.
February 2008
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
Device summary
KF15B
KF25B
KF33B
Very low drop voltage regulators with inhibit
Part numbers
Rev 11
SO-8
KF40B
KF50B
KF80B
DPAK
KFxxB
www.st.com
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KF50BD-TR Summary of contents

Page 1

Features ■ Very low dropout voltage (0.4 V) ■ Very low quiescent current (typ. 50 µA in OFF mode, 500 µ mode) ■ Output current up to 500 mA ■ Logic-controlled electronic shutdown ■ Output voltages of 1.5; ...

Page 2

Contents 1 Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...

Page 3

Diagram Figure 1. Schematic diagram 3/20 ...

Page 4

Pin configuration Figure 2. Pin connections (top view) SO-8 4/20 DPAK ...

Page 5

Maximum ratings Table 2. Absolute maximum ratings Symbol V DC input voltage I I Output current O P Power dissipation TOT T Storage temperature range STG T Operating junction temperature range OP Note: Absolute maximum ratings are those values ...

Page 6

Electrical characteristics Table 4. Electrical characteristics for KF15 (refer to the test circuits 2.2 µF unless otherwise specified.) O Symbol Parameter V Output voltage O V Operating input voltage I I Output current limit O ΔV ...

Page 7

Table 5. Electrical characteristics for KF25 (refer to the test circuits 2.2 µF unless otherwise specified.) O Symbol Parameter V Output voltage O V Operating input voltage I I Output current limit O ΔV Line regulation O ...

Page 8

Table 6. Electrical characteristics for KF33 (refer to the test circuits 2.2 µF unless otherwise specified.) O Symbol Parameter V Output voltage O V Operating input voltage I I Output current limit O ΔV Line regulation O ...

Page 9

Table 7. Electrical characteristics for KF40 (refer to the test circuits 2.2 µF unless otherwise specified.) O Symbol Parameter V Output voltage O V Operating input voltage I I Output current limit O ΔV Line regulation O ...

Page 10

Table 8. Electrical characteristics for KF50 (refer to the test circuits 2.2 µF unless otherwise specified.) O Symbol Parameter V Output voltage O V Operating input voltage I I Output current limit O ΔV Line regulation O ...

Page 11

Table 9. Electrical characteristics for KF80 (refer to the test circuits 2.2 µF unless otherwise specified.) O Symbol Parameter V Output voltage O V Operating input voltage I I Output current limit O ΔV Line regulation O ...

Page 12

Typical performance characteristics (unless otherwise specified V Figure 4. Dropout voltage vs output current Figure 6. Supply current vs input voltage Figure 8. Short circuit current vs input voltage 12/20 = 3.3 V) O(NOM) Figure 5. Dropout voltage vs ...

Page 13

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 ...

Page 14

Dim. Min. A 1.35 A1 0.10 A2 1.10 B 0.33 C 0.19 D 4. 5.80 h 0.25 L 0.40 k ddd 14/20 SO-8 mechanical data mm. Typ. Max. 1.75 0.25 1.65 0.51 0.25 5.00 4.00 1.27 ...

Page 15

DPAK mechanical data mm. Dim. Min. Typ. A 2.2 A1 0.9 A2 0.03 B 0.64 b4 5.2 C 0. 5.1 E 6.4 E1 4.7 e 2.28 e1 4 (L1) 2.8 L2 ...

Page 16

Tape & reel SO-8 mechanical data Dim. Min 12 8.1 Bo 5.5 Ko 2.1 Po 3.9 P 7.9 16/20 mm. Typ. Max. Min. 330 13.2 0.504 0.795 2.362 22.4 8.5 0.319 5.9 ...

Page 17

Tape & reel DPAK-PPAK mechanical data mm. Dim. Min. Typ 12.8 13 6.80 6.90 Bo 10.40 10.50 Ko 2.55 2.65 Po 3.9 4.0 P 7.9 8.0 inch. Max. Min. Typ. 330 13.2 ...

Page 18

... Order codes Table 10. Order codes SO-8 (tape and reel) KF25BD-TR KF33BD-TR KF50BD-TR 18/20 Packages DPAK (tape and reel) KF15BDT-TR KF25BDT-TR KF33BDT-TR KF40BDT-TR KF50BDT-TR KF80BDT-TR Output voltage 1.5 V 2 ...

Page 19

Revision history Table 11. Document revision history Date Revision 06-Jun-2007 9 14-Dec-2007 10 21-Feb-2008 11 Changes Order codes updated. Modified: Table 10. Modified: Table 10 on page 18. 19/20 ...

Page 20

... 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. ...

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