LDR1833PT STMicroelectronics, LDR1833PT Datasheet

IC REG LDO DUAL 1.8V/3.3V P-PAK

LDR1833PT

Manufacturer Part Number
LDR1833PT
Description
IC REG LDO DUAL 1.8V/3.3V P-PAK
Manufacturer
STMicroelectronics
Datasheet

Specifications of LDR1833PT

Regulator Topology
Positive Fixed
Voltage - Output
1.8V, 3.3V
Voltage - Input
Up to 15V
Voltage - Dropout (typical)
-, 0.4V @ 1A
Number Of Regulators
2
Current - Output
500mA (Max), 1A (Max)
Operating Temperature
-40°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
PPAK (4 leads + tab)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Current - Limit (min)
-

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
LDR1833PT
Manufacturer:
ST
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Part Number:
LDR1833PT-R
Manufacturer:
ST
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Features
Description
The LDR1833, LDR2533 is a very low drop dual
voltage regulator available in PPAK. The very low
drop-voltage (0.5 V) 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) to decrease the total power
consumption.
Table 1.
April 2008
Output current 1 up to 500 mA
Output current 2 up to 1.0 A
Low dropout voltage 1 (0.3 V @ I
Low dropout voltage 2 (0.4 V @ I
Very low supply current (typ. 50 µA in OFF
mode, 1.6 mA max in ON mode)
Logic-controlled electronic shutdown output
voltage availability for each regulator: 1.8 V,
2.5 V, 3.3 V
Internal current and thermal limit
Stable with low value (min. 4.7 µF) and low
ESR output capacitors
Supply voltage rejection: 70 dB (typ.)
Temperature range (- 40 °C to 125 °C)
Device summary
LDR1833PT-R
LDR2533PT-R
Order codes
O
O
O
= 500 mA)
= 1 A)
a
Very low drop dual voltage regulator
Rev 3
1.8 V
2.5 V
V
O1
Output voltages
PPAK
LDR1833
LDR2533
3.3 V
3.3 V
V
O2
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LDR1833PT Summary of contents

Page 1

... Monitors and Set-top-box. For each V shutdown logic control function is available (TTL compatible) to decrease the total power consumption. Table 1. Device summary Order codes LDR1833PT-R LDR2533PT-R April 2008 Very low drop dual voltage regulator = 500 mA ...

Page 2

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

Page 3

Diagram Figure 1. Block diagram NH1 START NH2 BAND GAP 2 START POWER 1 BAND GAP 1 DRIVER ERROR AMPLIFIER 1 THERMAL 1 THERMAL 2 + ...

Page 4

Pin configuration Figure 2. Pin connections (top view) Table 2. Pin description Pin n° Symbol 3 GND Ground pin 2 V Input 1 supply pin. Bypass with a 2.2µF capacitor to GND Input 2 supply pin. ...

Page 5

Maximum ratings Table 3. Absolute maximum ratings Symbol V & input voltage I1 I2 INH Shutdown voltage I Output current O P Power dissipation D T Storage temperature range STG T Operating ambient temperature range A Note: ...

Page 6

Typical application Figure 3. Typical application circuit 6/16 ...

Page 7

Electrical characteristics Table 5. Electrical characteristics ( 2.2 µF, C I1,2 O1,2 specified. Typical values are referred at T Symbol Parameter V Output voltage Output voltage 2 O2 (1) V Dropout voltage 1 DROP1 ...

Page 8

Typical characteristics (unless otherwise specified T Figure 4. Dropout voltage (V temperature Figure 6. Dropout voltage (V temperature Figure 8. Line regulation (V 8/ ° Figure Figure ...

Page 9

Figure 10. Line regulation (V temperature Figure 12. Short circuit current (V voltage Figure 14. Inhibit voltage vs temperature ) vs Figure 11. Load regulation ( drop Figure 13. Short circuit current (V O1 Figure 15. One ...

Page 10

Figure 16. Supply voltage rejection vs (V temperature Figure 18. Supply voltage rejection (V frequency Figure 20. Maximum total quiescent current vs temperature 10/16 ) Figure 17. Supply voltage rejection temperature ) vs Figure 19. Supply voltage ...

Page 11

Figure 22. Quiescent current (V current Figure 24. Thermal protection vs V Figure 26. Line transient V O1,2 C =0, C =2.2µF, V =4.4 to 10.4V, V I1,2 O1 =0.25A, I =0.5A =4.4µ RISE ...

Page 12

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 13

PPAK mechanical data mm. Dim. Min. Typ. A 2.2 A1 0.9 A2 0.03 B 0.4 B2 5.2 C 0. 5.1 E 6.4 E1 4.7 e 1.27 G 4.9 G1 2.38 H 9.35 L2 0.8 L4 ...

Page 14

Tape & reel DPAK-PPAK mechanical data Dim. Min 12 6.80 Bo 10.40 Ko 2.55 Po 3.9 P 7.9 14/16 mm. Typ. Max. Min. 330 13.0 13.2 0.504 0.795 2.362 22.4 6.90 7.00 ...

Page 15

Revision history Table 6. Document revision history Date Revision 03-Aug-2004 2 15-Apr-2008 3 Changes Modified: tables and figures 3, 6, 10, 11, 14, 17, 22, 23. Modified: Table 1 on page 1. 15/16 ...

Page 16

... 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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