STMicroelectronics LDR2518K7-R Very low drop dual voltage regulator Datasheet

LDRxxyy
VERY LOW DROP
DUAL VOLTAGE REGULATOR
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■
■
■
■
■
■
■
■
■
■
OUTPUT CURRENT 1 UP TO 500mA
OUTPUT CURRENT 2 UP TO 1.0A
LOW DROPOUT VOLTAGE 1
(0.3V @ IO =500mA)
LOW DROPOUT VOLTAGE 2
(0.4V @ IO =1A)
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)
SPAK-7L
PPAK
(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 VO a
Shutdown Logic Control function is available (TTL
compatible) to decrease the total power
consumption.
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
VI1
INH1
POWER 1
START UP 1
BAND GAP 1
VO1
DRIVER 1
+
ERROR
AMPLIFIER 1
THERMAL 1
THERMAL 2
+
ERROR
AMPLIFIER 2
INH2
START UP 2
BAND GAP 2
DRIVER 2
VI2
August 2004
POWER 2
VO2
Rev. 2
1/13
LDRxxyy
Table 1: Absolute Maximum Ratings
Symbol
Parameter
Value
Unit
VI1 & VI2
DC Input Voltage
-0.3 to 15
V
INH
IO
Shutdown Voltage
Output Current
-0.3 to 15
V
Internally Limited
PTOT
Power Dissipation
Internally Limited
TSTG
Storage Temperature Range
-50 to +150
°C
Operating Ambient Temperature Range
-40 to +125
°C
TA
Absolute Maximum Rating are those values beyond which damage to the device may occur. Functional operation under these conditions is
not implied.
Table 2: Thermal Data
Symbol
RTHJ-C
Parameter
Junction to case thermal resistance
PPAK
SPAK-7L
Unit
8
2
°C/W
Figure 2: Connection Diagram (top view)
PPAK
SPAK-7L
Table 3: Pin Description
Symbol
Pin N° for
PPAK
Pin N° for
SPAK-7L
GND
VI1
3
2
4
2
Ground pin
Input 1 Supply Pin. Bypass with a 2.2µF capacitor to GND
VI2
1
1
Input 2 Supply Pin. Bypass with a 2.2µF capacitor to GND
3
Name and Function
5
Enable 1 Pin. Internally connected to VI1 in the PPAK version
Enable 2 Pin. Internally connected to VI2 in the PPAK version
VO1
4
6
Output 1 Pin. Bypass with a 4.7µF capacitor to GND Port
VO2
5
7
VINH1
VINH2
N.C.
Output 2 Pin. Bypass with a 4.7µF capacitor to GND Port
Not Internally Connected
Table 4: Order Codes
PART NUMBERS
VO1
VO2
TYPE
1.8 V
1.8 V
2.5 V
2.5 V
3.3 V
3.3 V
2.5 V
3.3 V
1.8 V
3.3 V
1.8 V
2.5 V
LDR1825
LDR1833
LDR2518
LDR2533
LDR3318
LDR3325
2/13
SPAK-7L
PPAK
LDR1825K7-R
LDR1833K7-R
LDR2518K7-R
LDR2533K7-R
LDR3318K7-R
LDR3325K7-R
LDR1825PT-R
LDR1833PT-R
LDR2518PT-R
LDR2533PT-R
LDR3318PT-R
LDR3325PT-R
LDRxxyy
Table 5: Electrical Characteristics (VI1 = VO1+2V, VI2 = VO2+2V, VINH1 = VINH2 = 2.5V,
CI1,2 = 2.2µF, CO1,2 = 4.7µF, IO1 = IO2 = 10mA, TA = -40°C to 125°C, unless otherwise specified. Typical
values are referred at TA = 25°C)
Symbol
Parameter
VO1
Output Voltage 1
VO2
Output Voltage 2
VDROP1 Dropout Voltage 1 (1)
VDROP2 Dropout Voltage 2 (1)
Test Conditions
Min.
Typ.
Max.
Unit
-5
VNOM1
+5
%V
-5
VNOM2
+5
%V
IO1 = 500mA
0.3
0.7
V
IO2 = 1A
0.4
0.8
V
15
30
mV
Line Regulation 2
VI1 = VO1+2V to VO1+7V, IO = 250mA
VI2 = VO2+2V to VO2+7V, IO = 500mA
15
40
mV
∆VO1
Line Regulation 1
∆VO2
∆VO1
Load Regulation 1
VI1 = VO1+2V, IO1 = 10 to 500mA
10
mV
∆VO2
Load Regulation 2
VI2 = VO2+2V, IO2 = 10mA to 1A
60
mV
ISTOT
Total Supply Current
IO1 = IO2 = NO LOAD
2
mA
1 Channel Supply Current
NO LOAD
1
mA
IS
Quiescent Current
IO1 = 500mA, IO2 = 1A
ISC1
Short Circuit Current 1
TA = 25°
TA = 25°
IQMAX
ISC2
Short Circuit Current 2
VINH-H
Enable Voltage HIGH
VINH-L
Enable Voltage LOW
30
mA
500
800
mA
1
1.6
A
2.4
V
0.8
V
IINH
Enable Pin Current
VINH = 5V
6
µA
SVR
Supply Voltage Rejection (2)
VI1,2 = VO1,2 +3V ±1V, IO1,2 = 10 mA,
f = 120Hz
Bandwidth of 10Hz to 100KHz
70
dB
0.003
%VO
eN
RMS Output Noise (2)
(1): This test is not performed for VO<2.5V.
(2): Guaranteed by design, but not tested in production.
Figure 3: Typical Application Circuit
3/13
LDRxxyy
TYPICAL CHARACTERISTICS (unless otherwise specified Tj = 25°C)
Figure 4: Dropout Voltage (VO1) vs Temperature
Figure 7: Output Voltage (VO2) vs Temperature
Figure 5: Dropout Voltage (VO2) vs Temperature
Figure 8: Line Regulation (VO1) vs Temperature
Figure 6: Output Voltage (VO1) vs Temperature
Figure 9: Load Regulation (VO1) vs Temperature
4/13
LDRxxyy
Figure 10: Line Regulation (VO2) vs Temperature
Figure 13: Short Circuit Current (VO2) vs Drop
Voltage
Figure 11: Load Regulation (VO2) vs
Temperature
Figure 14: Inhibit Voltage vs Temperature
Figure 12: Short Circuit Current (VO1) vs Drop
Voltage
Figure 15: One Channel Inhibit Current vs
Temperature
5/13
LDRxxyy
Figure 16: Supply Voltage Rejection vs (VO1)
Temperature
Figure 19: Supply Voltage Rejection (VO2) vs
Frequency
Figure 17: Supply Voltage Rejection vs (VO2)
Temperature
Figure 20: Maximum Total Quiescent Current vs
Temperature
Figure 18: Supply Voltage Rejection (VO1) vs
Frequency
Figure 21: Total Supply Current vs Temperature
6/13
LDRxxyy
Figure 22: Quiescent Current (VO1) vs Output
Current
Figure 25: Load Transient
CI1,2=1µF, CO1,2=2.2µF, VINH1,2 =2.5V, VI1=4.5V, VI2=5.3V,
IO1=5mA to 0.5A, IO2=5mA to 1A, tRISE=tFALL=4.2µs
Figure 23: Quiescent Current (VO2) vs Output
Current
Figure 26: Line Transient VO1,2
CI1,2=0, CO1,2=2.2µF, VI1=4.4 to 10.4V, VI2=5.3 to 11.3V,
IO1=0.25A, IO2 =0.5A, tRISE=tFALL =4.4µs
Figure 24: Thermal Protection vs VO1
Figure 27: Start up Transient VO1
VI1=1.1 to 8.5V, VI2=1.2 to 9.8V, IO1=0.25A, IO2=0.5A, t RISE=5µs
7/13
LDRxxyy
PPAK MECHANICAL DATA
mm.
inch
DIM.
MIN.
TYP
MAX.
MIN.
TYP.
MAX.
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
0.4
0.6
0.015
0.023
B2
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
D1
E
5.1
6.4
0.244
0.201
6.6
0.252
0.260
E1
4.7
0.185
e
1.27
0.050
G
4.9
G1
2.38
2.7
0.093
0.106
H
9.35
10.1
0.368
0.397
L2
0.8
L4
0.6
L5
1
L6
5.25
1
1
2.8
0.193
0.206
0.031
0.023
0.039
0.039
0.039
0.110
0078180-E
8/13
LDRxxyy
SPAK-7L MECHANICAL DATA
DIM.
mm.
MIN.
A
1.78
A2
0.03
C
MAX.
MIN.
2.03
0.070
0.13
0.001
0.25
C1
D
TYP
inch
MAX.
0.080
0.005
0.010
0.25
1.02
TYP.
0.010
1.27
0.040
0.050
D1
7.87
8.13
0.310
0.320
F
0.63
0.79
0.025
0.031
G
1.27
0.050
G1
7.62
0.3
H1
5.59
0.220
H2
9.27
9.52
0.365
0.375
H3
8.89
9.14
0.350
0.360
L
10.41
10.67
0.410
L1
7.49
0.420
0.295
L2
8.89
9.14
0.350
0.360
M
0.79
1.04
0.031
0.041
6˚
3˚
N
V
0.25
3˚
0.010
6˚
PO13F2/A
9/13
LDRxxyy
Tape & Reel SPAK-xL MECHANICAL DATA
mm.
inch
DIM.
MIN.
TYP
A
MIN.
TYP.
180
13.0
13.2
MAX.
7.086
C
12.8
D
20.2
0.795
N
60
2.362
T
10/13
MAX.
0.504
0.512
14.4
0.519
0.567
Ao
9.70
9.80
9.90
0.382
0.386
0.390
Bo
10.85
10.95
11.05
0.423
0.427
0.431
Ko
2.30
2.40
2.50
0.090
0.094
0.098
Po
3.9
4.0
4.1
0.153
0.157
0.161
P
11.9
12.0
12.1
0.468
0.472
0.476
LDRxxyy
Tape & Reel DPAK-PPAK MECHANICAL DATA
mm.
inch
DIM.
MIN.
TYP
A
MAX.
MIN.
TYP.
330
13.0
12.992
C
12.8
D
20.2
0.795
N
60
2.362
T
13.2
MAX.
0.504
0.512
22.4
0.519
0.882
Ao
6.80
6.90
7.00
0.268
0.272
0.2.76
Bo
10.40
10.50
10.60
0.409
0.413
0.417
Ko
2.55
2.65
2.75
0.100
0.104
0.105
Po
3.9
4.0
4.1
0.153
0.157
0.161
P
7.9
8.0
8.1
0.311
0.315
0.319
11/13
LDRxxyy
Table 6: Revision History
Date
Revision
03-Aug-2004
2
12/13
Description of Changes
Typing correction on tables 1, 3, 5 and figures 3, 6, 10, 11, 14, 17, 22, 23.
LDRxxyy
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of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. 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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13/13
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