KD1084XX_08 STMICROELECTRONICS | Alldatasheet

Document overview

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Technical content

Datasheet sections

  • 1 Diagram
  • 2 Pin configuration
  • 3 Maximum ratings
  • 4 Schematic application
  • 5 Electrical characteristics
  • 6 Typical application
  • 7 Package mechanical data
  • 8 Revision history

Features

■ Typical dropout 1.3 V (at 5 A) ■ Three terminal adjustable or fixed output voltage 1.8 V, 3.3 V. ■ Guaranteed output current up to 5 A ■ Output tolerance ±1 % at 25 °C and ± 2 % in full temperature range for the "A" version ■ Output tolerance ± 2 % at 25 °C and ± 3 % in full temperature range internal power and thermal limit ■ Wide operating temp. range -40 °C to 125 °C ■ Package available: D2PAK and DPAK ■ Pinout compatibility with standard adjustable VREG

Description

The KD1084xx is a low drop voltage regulator able to provide up to 5 A of output current. Dropout is guaranteed at a maximum of 1.5 V at the maximum output current, decreasing at lower loads. The KD1084xx is pin to pin compatible with he older 3-terminal adjustable regulators but has better performances in term of drop and output tolerance. A 2.85 V output version is suitable for SCSI-2 active termination. Unlike PNP regulators, where a part of the output current is wasted as quiescent current, the KD1084xx quiescent current flows into the load, so increase efficiency. Only a 10 µF minimum capacitor is need for stability. The devices are supplied in D 2PAK and DPAK. On chip trimming allows the regulator to reach a very tight output voltage tolerance, within ±1% at 25 °C for "A" version and ± 2 % at 25 °C for standard version. DPAKD2PAK Table 1. Device summary

1 Diagram

Figure 1. Schematic diagram

2 Pin configuration

Figure 2. Pin connections (top view)

3 Maximum ratings

Note: Absolute maximum ratings are those values beyond which damage to the device may occur. Functional operation under these condition is not implied. Table 2. Absolute maximum ratings Table 3. Thermal data

4 Schematic application

Figure 3. Application circuit

5 Electrical characteristics

Table 4. Electrical characteristics of KD1084A#18 (VI = 4.8 V, CI = CO = 10 µF (tant.),

Table 5. Electrical characteristics of KD1084A#33 (VI = 6.3 V, CI = CO = 10 µF (tant.),

Table 6. Electrical characteristics of KD1084A (VI = 4.25 V, CI = CO = 10 µF (tant.),

Table 7. Electrical characteristics of KD1084#33 (VI = 5.85 V, CI = CO = 10 µF (tant.),

Table 8. Electrical characteristics of KD1084 (VI = 4.25 V, CI = CO = 10 µF (tant.),

6 Typical application

Figure 4. Dropout voltage vs output current Figure 5. Dropout voltage vs temperature Figure 6. Short circuit current vs dropout Figure 7. Line regulation vs temperature Figure 8. Output voltage vs temperature Figure 9. Load regulation vs temperature

7 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.

KD1084xx - KD1084Axx Package mechanical data Dim. mm. inch. A 2.2 2.4 0.0 86 0.0 94 A1 0. 9 1.1 0.0 35 0.04 3 A2 0.0 3 0.23 0.001 0.00 9 B 0.64 0. 9 0.025 0.0 35 b4 5.2 5.4 0.204 0.212 C 0.45 0.6 0.017 0.02 3 C2 0.4 8 0.6 0.01 9 0.023 D 6 6.2 0.2 36 0.244 D1 5.1 0.200 E 6.4 6.6 0.252 0.260 E1 4.7 0.1 85 e2 . 2 8 0.090 e1 4.4 4.6 0.17 3 0.181 H 9.35 10.1 0. 368 0.397 L 1 0.0 39 (L1) 2.8 0.110 L2 0. 8 0.031 L4 0.6 1 0.02 3 0.039 R 0.2 0.00 8 V2 0° 8°0 ° 8° DPAK mechanical data 0068772-F

Dim. mm. inch. A 4.4 4.6 0.17 3 0.181 A1 2.4 9 2.69 0.098 0.106 A2 0.0 3 0.23 0.001 0.00 9 B 0.7 0. 93 0.027 0.0 36 B2 1.14 1.7 0.044 0.067 C 0.45 0.6 0.017 0.02 3 C2 1.2 3 1.36 0.04 8 0.053 D 8.95 9.350 . 352 0. 368 D1 8 0.315 E 10 10.4 0. 393 0.409 E1 8.5 0. 335 G4 . 88 5.28 0.192 0.20 8 L 15 15. 85 0.5 90 0.624 L2 1.27 1.4 0.050 0.055 L3 1.4 1.75 0.055 0.06 8 M2 . 4 3.2 0.0 94 0.126 R 0.4 0.016 V2 0° 8°0 ° 8° D2PAK mechanical data P011P6G

KD1084xx - KD1084Axx Package mechanical data Dim. mm. inch. A 330 12. 992 D 20.2 0.7 95 N6 0 2 . 362 T2 2 . 4 0 . 882 Tape & reel DPAK-PPAK mechanical data

Dim. mm. inch. A1 80 7.0 86 D 20.2 0.7 95 N6 0 2 . 362 T 14.4 0.567 Tape & reel D2PAK-P2PAK-D2PAK/A-P2PAK/A mechanical data

8 Revision history

Table 9. Document revision history 06-Sep-2005 4 Order codes updated. 02-Apr-2007 5 Order codes updated. 30-May-2007 6 Order codes updated. 18-Dec-2007 7 Added Table 1. 21-Feb-2008 8 Modified: Table 1 on page 1. 16-Jul-2008 9 Modified: Table 1 on page 1.