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PDF ( 数据手册 , 数据表 ) LD1084

零件编号 LD1084
描述 5A low-drop positive voltage regulator adjustable
制造商 ST Microelectronics
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LD1084 数据手册, 描述, 功能
LD1084
5 A low-drop positive voltage regulator adjustable
TO-220
Datasheet - production data
LD1084 quiescent current flows into the load, so
to increase the efficiency. A minimum capacitor of
10 µF is needed for stability.
The device is supplied in TO-220. The on-chip
trimming allows the regulator to reach a very tight
output voltage tolerance, within ± 1% at 25 °C.
Table 1. Device summary
Order code
Output voltage
LD1084V
adjustable
Features
Typical dropout 1.3 V (at 5 A)
Three-terminal adjustable output voltage
Guaranteed output current up to 5 A
Output tolerance ± 1% at 25 °C and ± 2% in full
temperature range
Internal power and thermal limit
Wide operating temperature range -40 °C to
125 °C
Package available: TO-220
Pinout compatibility with standard adjustable
VREG
Description
The LD1084 is a low-drop voltage regulator
providing 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 LD1084 is pin-to-pin compatible with
the older 3-terminal adjustable regulators, but it
has better performances in terms of drop and
output tolerance.
Unlike PNP regulators, where a part of the output
current is wasted as quiescent current, the
September 2013
This is information on a product in full production.
DocID9035 Rev 10
1/16
www.st.com
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LD1084 pdf, 数据表
Typical performance characteristics
6 Typical performance characteristics
LD1084
Unless otherwise specified TJ = 25 °C, CI = 10 µF (tant.), CO = 22 µF (tant.)
Figure 4. Short-circuit current vs. dropout
Figure 5. Line regulation vs. temperature
voltage
Figure 6. Quiescent current vs. temperature
Figure 7. Output voltage vs. temperature
Figure 8. Load regulation vs. temperature Figure 9. Quiescent current vs. output voltage
8/16 DocID9035 Rev 10







LD1084 equivalent, schematic
LD1084
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