SPX2955 Sipexoration, SPX2955 Datasheet - Page 3

• Manufacturer Part Number: SPX2955
• Description: 350mA Low Drop Out Voltage Regulator with Shutdown
• Manufacturer: Sipexoration

(Continued)
Adjustable Versions only
Reference Voltage
Reference Voltage
Feedback Pin Bias Current
Reference Voltage Temperature
Coefficient
Feedback Pin Bias Current
Temperature Coefficient
Error Comparator
Output Leakage Current
Output Low Voltage
Upper Threshold Voltage
Lower Threshold Voltage
Hysteresis
Shutdown Input
Input logic Voltage
Shut down Pin Input Current
Regulator Output Current in Shutdown
Note 1: Output or reference voltage temperature coefficients defined as the worst case voltage change divided by the total temperature range.
Note 2: Unless otherwise specified all limits are guaranteed for T
feedback tied to 5V tap and output tied to output sense (V
Note 3: Regulation is measured at constant junction temperature, using pulse testing with a low duty cycle. Changes in output voltage due to heating effects are
covered under the specification for thermal regulation.
Note 4: Line regulation for the SPX2955/56/57 is tested at 150°C for I
typical performance characteristics for line regulation versus temperature and load current.
Note 5: Dropout voltage is defined as the input to output differential at which the output voltage drops 100 mV below its nominal value measured at 1V differential at
very low values of programmed output voltage, the minimum input supply voltage of 2V ( 2.3V over temperature) must be taken into account.
Note 6: V
Note 7: Comparator thresholds are expressed in terms of a voltage differential at the feedback terminal below the nominal reference voltage measured at 6V input. To
express these thresholds in terms of output voltage change, multiply by the error amplifier gain = V
voltage of 5V, the Error output is guaranteed to go low when the output drops by 95 mV x 5V/1.235 = 384 mV. Thresholds remain constant as a percent of V
V
Note 8: V
Note 9: The junction -to-ambient thermal resistance of the TO-92 package is 180°C/ W with 0.4” leads and 160°C/ W with 0.25” leads to a PC board.
The thermal resistance of the 8-Pin DIP package is 105°C/W junction-to-ambient when soldered directly to a PC board. Junction-to-ambient thermal resistance for the
SOIC (S) package is 160°C/W.
OUT
is varied, with the dropout warning occurring at typically 5% below nominal, 7.5% guaranteed.
SHUTDOWN
REF
PARAMETER
≤V
OUT
≥ 2V, V
≤ (Vin - 1V), 2.3 ≤Vin≤30V, 100µA≤I
IN
≤ 30V, V
OUT
=0, Feedback pin tied to 5V Tap.
Over Temperature (Note 6)
(Note 7)
V
V
I
(Note 8)
(Note 8)
(Note 8)
Low (Regulator ON)
High (Regulator OFF)
V
V
0L
0H
IN
S
S
= 400µA
= 2.4V
= 30V
= 4.5V
= 30V
OUT
CONDITIONS
L
≤ 250 mA, T
= 5V) and V
(Note 2)
j
= 25°C, V
L
= 1 mA. For I
J
SHUTDOWN
≤ T
IN
JMAX
= 6V, I
.
≤ 0.8V.
L
L
= 100µA and T
= 100µA and C
1.235
Typ.
Typ.
0.01
150
450
0.1
1.3
20
50
60
75
15
30
3
OUT
/V
J
L
= 125°C, line regulation is guaranteed by design to 0.2%. See
REF
= 1µF. Additional conditions for the 8-pin versions are
1.210
1.200
1.185
Min
2.0
SPX2955/57A
SPX2955/57A
40
25
10
20
= (R1 + R2)/R2. For example, at a programmed output
1.260
1.270
1.285
Max
1.00
2.00
100
600
750
250
400
140
0.7
40
60
95
50
SPX2955/56/57
1.200
1.990
1.185
2.0
Min
SPX2955/57B
40
25
SPX2955/57
Rev. 11/21/00
Max
1.270
1.280
1.285
1000
1.00
2.00
250
400
140
150
800
0.7
60
80
95
90
15
25
UNITS
OUT
ppm/°C
nA/°C
NA
mV
mV
mV
mV
µA
µA
µA
V
V
V
as