KD1084_07 STMICROELECTRONICS | Alldatasheet
Document overview
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- PDF pages: 22
Technical content
Datasheet sections
- 1 Pin configuration
- 2 Maximum ratings
- 3 Schematic application
- 4 Electrical characteristics
- 5 Typical application
- 6 Package mechanical data
- 7 Order codes
- 8 Revision history
Features
■ Typical dropout 1.3V (at 5A) ■ Three terminal adjustable or fixed output voltage 1.8V, 2.5V, 3.3V. ■ Guaranteed output current up to 5A ■ 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: TO-220, D2PAK, DPAK ■ Pinout compatibility with standard adjustable VREG
Description
The KD1084 is a LOW DROP Voltage Regulator able to provide up to 5A of Output Current. Dropout is guaranteed at a maximum of 1.5V at the maximum output current, decreasing at lower loads. The KD1084 is pin to pin compatible with he older 3-terminal adjustable regulators but has better performances in term of drop and output tolerance. A 2.85V 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 KD1084 quiescent current flows into the load, so increase efficiency. Only a 10µF minimum capacitor is need for stability. The devices are supplied in TO-220, 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. DPAKTO-220 D2PAK Schematic diagram
1 Pin configuration
Figure 1. Pin connections (top view)
2 Maximum ratings
Table 1. Absolute maximum ratings Table 2. Thermal Data
3 Schematic application
Figure 2. Application circuit
4 Electrical characteristics
Table 3. Electrical characteristics of KD1084A#18 (VI = 4.8V, CI = CO = 10µF(Tant.),
Table 4. Electrical characteristics of KD1084A#25 (VI = 5.5V, CI = CO = 10µF(Tant.), Table 5. Electrical characteristics of KD1084A#33 (VI = 6.3V, CI = CO = 10µF(Tant.),
Table 6. Electrical characteristics of KD1084A (VI = 4.25V, CI = CO = 10µF(Tant.),
Table 7. Electrical characteristics of KD1084#18 (VI = 4.8V, CI = CO = 10µF(Tant.), Table 8. Electrical characteristics of KD1084#25 (VI = 5.5V, CI = CO = 10µF(Tant.),
Table 9. Electrical characteristics of KD1084#33 (VI = 5.85V, CI = CO = 10µF(Tant.),
Table 10. Electrical characteristics of KD1084 (VI = 4.25V, CI = CO = 10µF(Tant.),
5 Typical application
Figure 3. Dropout voltage vs output current Figure 4. Dropout voltage vs temperature Figure 5. Short circuit current vs dropout Figure 6. Line regulation vs temperature Figure 7. Output voltage vs temperature Figure 8. Load regulation vs temperature
6 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.
KD1084 series Package mechanical data DIM. mm. inch A 4.40 4.60 0.173 0.181 C 1.23 1.32 0.048 0.051 D 2.40 2.72 0.094 0.107 D1 1.27 0.050 E 0.49 0.70 0.019 0.027 F 0.61 0.88 0.024 0.034 F1 1.14 1.70 0.044 0.067 F2 1.14 1.70 0.044 0.067 G 4.95 5.15 0.194 0.203 G1 2.4 2.7 0.094 0.106 H2 10.0 10.40 0.393 0.409 L2 16.4 0.645 L4 13.0 14.0 0.511 0.551 L5 2.65 2.95 0.104 0.116 L6 15.25 15.75 0.600 0.620 L7 6.2 6.6 0.244 0.260 L9 3.5 3.93 0.137 0.154 TO-220 MECHANICAL DATA P011C
DIM. mm. inch A 2.2 2.4 0.086 0.094 A1 0.9 1.1 0.035 0.043 A2 0.03 0.23 0.001 0.009 B 0.64 0.9 0.025 0.035 b4 5.2 5.4 0.204 0.212 C 0.45 0.6 0.017 0.023 C2 0.48 0.6 0.019 0.023 D 6 6.2 0.236 0.244 D1 5.1 0.200 E 6.4 6.6 0.252 0.260 E1 4.7 0.185 e 2.28 0.090 e1 4.4 4.6 0.173 0.181 H 9.35 10.1 0.368 0.397 L 1 0.039 (L1) 2.8 0.110 L2 0.8 0.031 L4 0.6 1 0.023 0.039 R 0.2 0.008 V2 0° 8° 0° 8° DPAK MECHANICAL DATA 0068772-F
KD1084 series Package mechanical data DIM. mm. inch A 4.4 4.6 0.173 0.181 A1 2.49 2.69 0.098 0.106 A2 0.03 0.23 0.001 0.009 B 0.7 0.93 0.027 0.036 B2 1.14 1.7 0.044 0.067 C 0.45 0.6 0.017 0.023 C2 1.23 1.36 0.048 0.053 D 8.95 9.35 0.352 0.368 D1 8 0.315 E 10 10.4 0.393 0.409 E1 8.5 0.335 G 4.88 5.28 0.192 0.208 L 15 15.85 0.590 0.624 L2 1.27 1.4 0.050 0.055 L3 1.4 1.75 0.055 0.068 M 2.4 3.2 0.094 0.126 R 0.4 0.016 V2 0˚ 8˚ 0˚ 8˚ D2PAK MECHANICAL DATA P011P6G
DIM. mm. inch A 330 12.992 D 20.2 0.795 N 60 2.362 T 22.4 0.882 Tape & Reel DPAK-PPAK MECHANICAL DATA
KD1084 series Package mechanical data DIM. mm. inch A 180 7.086 D 20.2 0.795 N 60 2.362 T 14.4 0.567 Tape & Reel D2PAK-P2PAK-D2PAK/A-P2PAK/A MECHANICAL DATA
7 Order codes
Table 11. Order codes
8 Revision history
Table 12. Revision history 06-Sep-2005 4 Order Codes has been updated. 02-Apr-2007 5 Order Codes has been updated and the document has been reformatted. 30-May-2007 6 Order Codes has been updated.