LDRXXYY [STMICROELECTRONICS]
VERY LOW DROP DUAL VOLTAGE REGULATOR; 非常低的双降稳压器
| 型号： | LDRXXYY |
| 厂家： | 
ST |
| 描述： | VERY LOW DROP DUAL VOLTAGE REGULATOR |
| 文件： | 总13页 (文件大小：389K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
LDRxxyy
VERY LOW DROP
DUAL VOLTAGE REGULATOR
■
■
■
OUTPUT CURRENT 1 UP TO 500mA
OUTPUT CURRENT 2 UP TO 1.0A
LOW DROPOUT VOLTAGE 1
(0.3V @ I =500mA)
O
■
■
■
■
LOW DROPOUT VOLTAGE 2
(0.4V @ I =1A)
O
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 V
a
O
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
POWER 1
VI1
VO1
BAND GAP 1
DRIVER 1
START UP 1
INH1
+
-
ERROR
AMPLIFIER 1
THERMAL 1
THERMAL 2
+
-
ERROR
AMPLIFIER 2
BAND GAP 2
START UP 2
INH2
DRIVER 2
POWER 2
VI2
VO2
Rev. 2
1/13
August 2004
LDRxxyy
Table 1: Absolute Maximum Ratings
Symbol
& V
Parameter
Value
Unit
V
DC Input Voltage
-0.3 to 15
-0.3 to 15
V
V
I1
I2
INH
Shutdown Voltage
Output Current
I
Internally Limited
Internally Limited
-50 to +150
O
P
Power Dissipation
TOT
STG
T
Storage Temperature Range
Operating Ambient Temperature Range
°C
°C
T
-40 to +125
A
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
Parameter
PPAK
SPAK-7L
Unit
R
Junction to case thermal resistance
8
2
°C/W
THJ-C
Figure 2: Connection Diagram (top view)
PPAK
SPAK-7L
Table 3: Pin Description
Pin N° for
PPAK
Pin N° for
SPAK-7L
Symbol
Name and Function
GND
3
2
1
4
2
1
Ground pin
V
V
Input 1 Supply Pin. Bypass with a 2.2µF capacitor to GND
Input 2 Supply Pin. Bypass with a 2.2µF capacitor to GND
I1
I2
V
3
5
6
7
Enable 1 Pin. Internally connected to V in the PPAK version
I1
INH1
INH2
V
Enable 2 Pin. Internally connected to V in the PPAK version
I2
V
4
5
Output 1 Pin. Bypass with a 4.7µF capacitor to GND Port
Output 2 Pin. Bypass with a 4.7µF capacitor to GND Port
Not Internally Connected
O1
O2
V
N.C.
Table 4: Order Codes
PART NUMBERS
V
V
O2
TYPE
O1
SPAK-7L
PPAK
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
LDR1825K7-R
LDR1833K7-R
LDR2518K7-R
LDR2533K7-R
LDR3318K7-R
LDR3325K7-R
LDR1825PT-R
LDR1833PT-R
LDR2518PT-R
LDR2533PT-R
LDR3318PT-R
LDR3325PT-R
2/13
LDRxxyy
Table 5: Electrical Characteristics (V = V +2V, V = V +2V, V
= V
= 2.5V,
I1
O1
I2
O2
INH1
INH2
C
= 2.2µF, C
= 4.7µF, I = I = 10mA, T = -40°C to 125°C, unless otherwise specified. Typical
I1,2
O1,2
O1
O2
A
values are referred at T = 25°C)
A
Symbol
Parameter
Output Voltage 1
Output Voltage 2
Test Conditions
Min.
-5
Typ.
Max.
+5
Unit
%V
%V
V
V
V
V
NOM1
O1
O2
-5
V
+5
NOM2
(1)
V
V
I
I
= 500mA
0.3
0.7
0.8
30
DROP1 Dropout Voltage 1
O1
(1)
= 1A
= V +2V to V +7V, I = 250mA
0.4
15
15
10
60
2
V
DROP2 Dropout Voltage 2
O2
∆V
Line Regulation 1
Line Regulation 2
Load Regulation 1
Load Regulation 2
V
V
V
V
mV
mV
mV
mV
mA
mA
mA
mA
A
O1
O2
I1
I2
O1
O1
O
∆V
∆V
∆V
= V +2V to V +7V, I = 500mA
40
O2
O2
O
= V +2V, I = 10 to 500mA
O1
I1
O1
O1
= V +2V, I = 10mA to 1A
O2
I2
O2
O2
I
Total Supply Current
1 Channel Supply Current
Quiescent Current
I
= I = NO LOAD
O1 O2
STOT
I
NO LOAD
1
S
I
I
= 500mA, I = 1A
30
800
1.6
QMAX
O1
O2
I
I
Short Circuit Current 1
Short Circuit Current 2
Enable Voltage HIGH
Enable Voltage LOW
Enable Pin Current
T
T
= 25°
= 25°
500
1
SC1
SC2
A
A
V
2.4
V
INH-H
V
0.8
V
INH-L
I
V
V
= 5V
6
µA
dB
INH
INH
(2)
SVR
= V
+3V ±1V, I = 10 mA,
O1,2
70
Supply Voltage Rejection
I1,2
O1,2
f = 120Hz
Bandwidth of 10Hz to 100KHz
(2)
e
0.003
%V
O
N
RMS Output Noise
(1): This test is not performed for V <2.5V.
O
(2): Guaranteed by design, but not tested in production.
Figure 3: Typical Application Circuit
3/13
LDRxxyy
TYPICAL CHARACTERISTICS (unless otherwise specified T = 25°C)
j
Figure 4: Dropout Voltage (V ) vs Temperature
Figure 7: Output Voltage (V ) vs Temperature
O2
O1
Figure 5: Dropout Voltage (V ) vs Temperature
Figure 8: Line Regulation (V ) vs Temperature
O1
O2
Figure 6: Output Voltage (V ) vs Temperature
Figure 9: Load Regulation (V ) vs Temperature
O1
O1
4/13
LDRxxyy
Figure 10: Line Regulation (V ) vs Temperature
Figure 13: Short Circuit Current (V ) vs Drop
O2
O2
Voltage
Figure 11: Load Regulation (V ) vs
Figure 14: Inhibit Voltage vs Temperature
O2
Temperature
Figure 12: Short Circuit Current (V ) vs Drop
Figure 15: One Channel Inhibit Current vs
O1
Voltage
Temperature
5/13
LDRxxyy
Figure 16: Supply Voltage Rejection vs (V
)
Figure 19: Supply Voltage Rejection (V ) vs
O1
O2
Temperature
Frequency
Figure 17: Supply Voltage Rejection vs (V
)
Figure 20: Maximum Total Quiescent Current vs
O2
Temperature
Temperature
Figure 18: Supply Voltage Rejection (V ) vs
Figure 21: Total Supply Current vs Temperature
O1
Frequency
6/13
LDRxxyy
Figure 22: Quiescent Current (V ) vs Output
Figure 25: Load Transient
O1
Current
C
=1µF, C
=2.2µF, V
=2.5V, V =4.5V, V =5.3V,
INH1,2 I1 I2
I1,2
O1,2
I
=5mA to 0.5A, I =5mA to 1A, t
=t
=4.2µs
O1
O2
RISE FALL
Figure 26: Line Transient V
Figure 23: Quiescent Current (V ) vs Output
O1,2
O2
Current
C
=0, C
=2.2µF, V =4.4 to 10.4V, V =5.3 to 11.3V,
I1,2
O1,2 I1 I2
I
=0.25A, I =0.5A, t
=t
=4.4µs
O1
O2
RISE FALL
Figure 24: Thermal Protection vs V
Figure 27: Start up Transient V
O1
O1
V =1.1 to 8.5V, V =1.2 to 9.8V, I =0.25A, I =0.5A, t =5µs
RISE
I1
I2
O1
O2
7/13
LDRxxyy
PPAK MECHANICAL DATA
mm.
inch
TYP.
DIM.
MIN.
TYP
MAX.
MIN.
MAX.
A
A1
A2
B
2.2
0.9
0.03
0.4
5.2
0.45
0.48
6
2.4
1.1
0.23
0.6
5.4
0.6
0.6
6.2
0.086
0.035
0.001
0.015
0.204
0.017
0.019
0.236
0.094
0.043
0.009
0.023
0.212
0.023
0.023
0.244
B2
C
C2
D
D1
E
5.1
0.201
6.4
6.6
0.252
0.260
E1
e
4.7
0.185
0.050
1.27
G
4.9
5.25
2.7
10.1
1
0.193
0.093
0.368
0.206
0.106
0.397
0.039
0.039
G1
H
2.38
9.35
L2
L4
L5
L6
0.8
2.8
0.031
0.110
0.6
1
1
0.023
0.039
0078180-E
8/13
LDRxxyy
SPAK-7L MECHANICAL DATA
mm.
inch
TYP.
DIM.
MIN.
1.78
0.03
TYP
MAX.
2.03
MIN.
0.070
0.001
MAX.
0.080
0.005
A
A2
C
0.13
0.25
0.25
0.010
0.010
C1
D
1.02
7.87
0.63
1.27
8.13
0.79
0.040
0.310
0.025
0.050
0.320
0.031
D1
F
G
1.27
7.62
5.59
0.050
0.3
G1
H1
H2
H3
L
0.220
9.27
8.89
9.52
9.14
0.365
0.350
0.410
0.375
0.360
0.420
10.41
10.67
L1
L2
M
7.49
0.25
0.295
0.010
8.89
0.79
9.14
1.04
0.350
0.031
0.360
0.041
N
V
3˚
6˚
3˚
6˚
PO13F2/A
9/13
LDRxxyy
Tape & Reel SPAK-xL MECHANICAL DATA
mm.
TYP
inch
DIM.
MIN.
MAX.
180
MIN.
TYP.
MAX.
7.086
0.519
A
C
12.8
20.2
60
13.0
13.2
0.504
0.795
2.362
0.512
D
N
T
14.4
9.90
11.05
2.50
4.1
0.567
0.390
0.431
0.098
0.161
0.476
Ao
Bo
Ko
Po
P
9.70
10.85
2.30
3.9
9.80
10.95
2.40
4.0
0.382
0.423
0.090
0.153
0.468
0.386
0.427
0.094
0.157
0.472
11.9
12.0
12.1
10/13
LDRxxyy
Tape & Reel DPAK-PPAK MECHANICAL DATA
mm.
TYP
inch
TYP.
DIM.
MIN.
MAX.
330
MIN.
MAX.
12.992
0.519
A
C
12.8
20.2
60
13.0
13.2
0.504
0.795
2.362
0.512
D
N
T
22.4
7.00
10.60
2.75
4.1
0.882
0.2.76
0.417
0.105
0.161
0.319
Ao
Bo
Ko
Po
P
6.80
10.40
2.55
3.9
6.90
10.50
2.65
4.0
0.268
0.409
0.100
0.153
0.311
0.272
0.413
0.104
0.157
0.315
7.9
8.0
8.1
11/13
LDRxxyy
Table 6: Revision History
Date
Revision
Description of Changes
03-Aug-2004
2
Typing correction on tables 1, 3, 5 and figures 3, 6, 10, 11, 14, 17, 22, 23.
12/13
LDRxxyy
Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences
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.
The ST logo is a registered trademark of STMicroelectronics
All other names are the property of their respective owners
© 2004 STMicroelectronics - All Rights Reserved
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13/13
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