ldr2533 STMicroelectronics, ldr2533 Datasheet

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ldr2533

Manufacturer Part Number
ldr2533
Description
Very Low Drop Dual Voltage Regulator
Manufacturer
STMicroelectronics
Datasheet

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DESCRIPTION
The LDRxxyy is a Very Low Drop Dual Voltage
Regulator available in PPAK for the version
without inhibit and in SPAK-7L for the version with
the shutdown feature. The very low drop-voltage
Figure 1: Block Diagram
August 2004
OUTPUT CURRENT 1 UP TO 500mA
OUTPUT CURRENT 2 UP TO 1.0A
LOW DROPOUT VOLTAGE 1
(0.3V @ I
LOW DROPOUT VOLTAGE 2
(0.4V @ I
VERY LOW SUPPLY CURRENT (TYP.50µA
IN OFF MODE, 1.6mA MAX IN ON MODE)
LOGIC-CONTROLLED ELECTRONIC
SHUTDOWN
OUTPUT VOLTAGE AVAILABILITY FOR
EACH REGULATOR: 1.8V, 2.5V, 3.3V
INTERNAL CURRENT AND THERMAL LIMIT
STABLE WITH LOW VALUE (MIN 4.7µF)
AND LOW E.S.R. OUTPUT CAPACITORS
SUPPLY VOLTAGE REJECTION: 70dB (TYP.)
TEMPERATURE RANGE (-40°C TO 125°C)
O
O
=500mA)
=1A)
V
I
NH1
V
I
I1
NH2
I2
START UP 2
START UP 1
BAND GAP 2
BAND GAP 1
POWER 2
AMPLIFIER 2
+
-
DRIVER 2
AMPLIFIER 1
+
-
THERMAL 2
THERMAL 1
ERROR
ERROR
POWER 1
DRIVER 1
DUAL VOLTAGE REGULATOR
(0.5V) and the very low supply current make it
particularly suitable for low noise and low power
applications such as PDA, MICRODRIVE and
other data storage applications while the used
high voltage technology makes this device
suitable for consumer applications such as
MONITORS AND SET-TOP-BOX. For each V
Shutdown Logic Control function is available (TTL
compatible)
consumption.
SPAK-7L
to
VERY LOW DROP
decrease
V
V
O1
O2
Rev. 2
LDRxxyy
the
PPAK
total
power
1/13
O
a

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ldr2533 Summary of contents

Page 1

OUTPUT CURRENT 500mA OUTPUT CURRENT 1.0A LOW DROPOUT VOLTAGE 1 (0. =500mA) O LOW DROPOUT VOLTAGE 2 (0. =1A) O VERY LOW SUPPLY CURRENT (TYP.50µA IN OFF MODE, 1.6mA MAX ...

Page 2

... Value -0 -0 Internally Limited Internally Limited -50 to +150 -40 to +125 PPAK SPAK- SPAK-7L Name and Function in the PPAK version I1 in the PPAK version I2 PART NUMBERS SPAK-7L PPAK LDR1825PT-R LDR1833PT-R LDR2518PT-R LDR2533PT-R LDR3318PT-R LDR3325PT-R Unit V V °C °C Unit °C/W ...

Page 3

Table 5: Electrical Characteristics ( 2 4 I1,2 O1,2 values are referred 25°C) A Symbol Parameter V Output Voltage Output Voltage (1) Dropout Voltage ...

Page 4

LDRxxyy TYPICAL CHARACTERISTICS (unless otherwise specified T Figure 4: Dropout Voltage (V Figure 5: Dropout Voltage (V Figure 6: Output Voltage ( Temperature Figure 7: Output Voltage ( Temperature Figure 8: Line Regulation ...

Page 5

Figure 10: Line Regulation (V Figure 11: Load Regulation (V Temperature Figure 12: Short Circuit Current (V Voltage ) vs Temperature Figure 13: Short Circuit Current (V O2 Voltage ) vs Figure 14: Inhibit Voltage vs Temperature ...

Page 6

LDRxxyy Figure 16: Supply Voltage Rejection vs (V Temperature Figure 17: Supply Voltage Rejection vs (V Temperature Figure 18: Supply Voltage Rejection (V Frequency 6/13 ) Figure 19: Supply Voltage Rejection (V O1 Frequency ) Figure 20: Maximum Total Quiescent ...

Page 7

Figure 22: Quiescent Current (V Current Figure 23: Quiescent Current (V Current Figure 24: Thermal Protection Output Figure 25: Load Transient O1 C =1µF, C I1,2 I =5mA to 0.5A Figure 26: Line Transient ...

Page 8

LDRxxyy DIM. MIN. A 2.2 A1 0.9 A2 0.03 B 0.4 B2 5.2 C 0. 4.9 G1 2. 8/13 PPAK MECHANICAL DATA ...

Page 9

SPAK-7L MECHANICAL DATA DIM. MIN. A 1. 1.02 D1 7. 9.27 H3 8.89 L 10. 8. 3˚ mm. TYP MAX. 2.03 0.070 0.13 ...

Page 10

LDRxxyy Tape & Reel SPAK-xL MECHANICAL DATA DIM. MIN 12 9.70 Bo 10.85 Ko 2.30 Po 3.9 P 11.9 10/13 mm. TYP MAX. 180 13.0 13.2 14.4 9.80 9.90 10.95 11.05 2.40 ...

Page 11

Tape & Reel DPAK-PPAK MECHANICAL DATA DIM. MIN 12 6.80 Bo 10.40 Ko 2.55 Po 3.9 P 7.9 mm. TYP MAX. 330 13.0 13.2 22.4 6.90 7.00 10.50 10.60 2.65 2.75 4.0 ...

Page 12

LDRxxyy Table 6: Revision History Date Revision 03-Aug-2004 2 12/13 Description of Changes Typing correction on tables and figures 3, 6, 10, 11, 14, 17, 22, 23. ...

Page 13

... No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics ...

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