lt3015edd Linear Technology Corporation, lt3015edd Datasheet - Page 4

• Manufacturer Part Number: lt3015edd
• Description: 1.5a, Low Noise, Negative Linear Regulator With Precision Current Limit
• Manufacturer: Linear Technology Corporation

LT3015
ELECTRICAL CHARACTERISTICS
temperature range, otherwise specifications are at T
PARAMETER
Dropout Voltage
V
(Notes 4, 5)
GND Pin Current
V
(Notes 4, 6)
Output Voltage Noise
ADJ Pin Bias Current
(Notes 2, 7)
Shutdown Threshold (Note 11)
SHDN Pin Current (Note 8)
Quiescent Current in Shutdown
Ripple Rejection
Current Limit
Input Reverse Leakage Current
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2. The LT3015 is tested and specified for these conditions with the
ADJ pin connected to the OUT pin.
Note 3. Maximum junction temperature limits operating conditions. The
regulated output voltage specification does not apply for all possible
combinations of input voltage and output current. If operating at maximum
output current, limit the input voltage range. If operating at maximum
input voltage, limit the output current range.
Note 4. To satisfy minimum input voltage requirements, the LT3015 is
tested and specified for these conditions with an external resistor divider
(54.9k top, 49.9k bottom) for an output voltage of –2.56V. The external
resistor adds 25μA of DC load on the output.
Note 5. Dropout voltage is the minimum input-to-output voltage
differential needed to maintain regulation at a specified output current. In
dropout, the output voltage is: V
4
IN
IN
= V
= V
OUT(NOMINAL)
OUT(NOMINAL)
IN
+ V
CONDITIONS
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
C
V
V
V
V
V
V
V
V
V
V
f
V
V
V
LOAD
LOAD
LOAD
LOAD
LOAD
LOAD
LOAD
LOAD
LOAD
LOAD
LOAD
LOAD
LOAD
LOAD
LOAD
LOAD
LOAD
RIPPLE
DROPOUT
OUT
IN
OUT
OUT
OUT
OUT
SHDN
SHDN
SHDN
IN
IN
IN
IN
IN
- V
= –2.3V
= –6V, SHDN = 0V
= –2.3V, V
= –2.3V, ΔV
= 30V, V
= 10μF , I
= Off-to-On (Positive)
= Off-to-On (Negative)
= On-to-Off (Positive)
= On-to-Off (Negative)
= –1mA
= –1mA
= –100mA
= –100mA
= –500mA (DFN/MSOP)
= –500mA (DFN/MSOP)
= –500mA (DD-PAK/TO-220)
= –500mA (DD-PAK/TO-220)
= –1.5A (DFN/MSOP)
= –1.5A (DFN/MSOP)
= –1.5A (DD-PAK/TO-220)
= –1.5A (DD-PAK/TO-220)
= 0mA
= –1mA
= –100mA
= –500mA
= –1.5A
OUT
= 0V
= 15V
= –15V
= 120Hz, I
.
= –1.5V (Avg), V
OUT
LOAD
OUT
OUT
, V
LOAD
= 0V
ADJ
= –1.5A, BW = 10Hz to 100kHz
= 0.1V
, V
= –1.5A
A
SHDN
= 25°C.
RIPPLE
= Open Circuit
The
= 0.5V
l
denotes the specifications which apply over the full operating
P-P
Note 6. GND pin current is tested with V
source load. Therefore, the device is tested while operating in dropout.
This is the worst-case GND pin current. GND pin current decreases slightly
at higher input voltages.
Note 7. Positive ADJ pin bias current flows into the ADJ pin.
Note 8. Positive SHDN pin current flows into the SHDN pin.
Note 9. The LT3015 is tested and specified under pulsed load conditions
such that T
specifications from 0°C to 125°C junction temperature. Specifications over
the –40°C to 125°C operating temperature range are assured by design,
characterization, and correlation with statistical process controls. The
LT3015I is guaranteed over the full –40°C to 125°C operating junction
temperature range. The LT3015MP is 100% tested and guaranteed over
the full –55°C to 125°C operating junction temperature range.
Note 10. Parasitic diodes exist internally between the OUT, ADJ, SHDN pins
and the IN pin. Do not drive the OUT, ADJ, and SHDN pins more that 0.3V
below the IN pin during fault conditions, and these pins must remain at a
voltage more positive than IN during normal operation.
Note 11. The SHDN threshold must be met to ensure device operation.
J
≅ T
A
. The LT3015E is guaranteed to meet performance
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
–1.34
–200
1.07
–1.0
1.75
MIN
0.5
1.8
55
IN
= V
0.055
–1.20
–0.73
OUT(NOMINAL)
0.17
0.31
0.41
1.15
1.21
0.73
–2.8
0.01
1.95
1.55
TYP
0.1
0.2
1.1
2.9
9.5
2.0
35
60
30
17
65
0
0.095
–1.06
MAX
0.16
0.16
0.24
0.23
0.32
0.27
0.39
0.39
0.51
0.68
1.35
–0.5
–4.5
2.15
200
0.5
2.4
2.5
7.0
2.2
1.7
23
70
10
27
6
and a current
μV
UNITS
3015f
RMS
mA
mA
mA
mA
mA
mA
nA
μA
μA
μA
μA
dB
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
A
A