ADP170 Analog Devices, Inc., ADP170 Datasheet - Page 4

• Manufacturer Part Number: ADP170
• Description: 300 Ma, Low Quiescent Current, Cmos Linear Regulators
• Manufacturer: Analog Devices, Inc.

ADP170/ADP171
Parameter
OUTPUT NOISE
POWER SUPPLY REJECTION RATIO
1
2
3
4
5
6
INPUT AND OUTPUT CAPACITOR, RECOMMENDED SPECIFICATIONS
Table 2.
Parameter
MINIMUM INPUT AND OUTPUT
CAPACITOR ESR
1
The current from the external resistor divider network in the case of adjustable voltage output (as with the ADP171) should be subtracted from the ground current measured.
Accuracy when VOUT is connected directly to ADJ. When the VOUT voltage is set by external feedback resistors, the absolute accuracy in adjust mode depends on the
tolerances of resistors used.
Based on an end-point calculation using 1 mA and 300 mA loads. See
Applies only for output voltages above 1.6 V. Dropout voltage is defined as the input-to-output voltage differential when the input voltage is set to the nominal
output voltage.
Start-up time is defined as the time between the rising edge of EN and VOUT being at 90% of its nominal value.
Current-limit threshold is defined as the current at which the output voltage drops to 90% of the specified typical value. For example, the current limit for a 3.0 V
output voltage is defined as the current that causes the output voltage to drop to 90% of 3.0 V, or 2.7 V.
The minimum input and output capacitance should be greater than 0.45 μF over the full range of operating conditions. The full range of operating conditions in the
application must be considered during device selection to ensure that the minimum capacitance specification is met. X7R and X5R type capacitors are recommended;
Y5V and Z5U capacitors are not recommended for use with any LDO.
CAPACITANCE
1
Symbol
C
R
Symbol
OUT
PSRR
MIN
ESR
NOISE
Conditions
Conditions
10 Hz to 100 kHz, V
10 Hz to 100 kHz, V
10 Hz to 100 kHz, V
10 Hz to 100 kHz, V
1 kHz, V
10 kHz, V
10 kHz, V
100 kHz, V
T
T
J
J
= −40°C to +125°C
= −40°C to +125°C
Figure 6
IN
Rev. 0 | Page 4 of 20
IN
IN
= 3.6 V, I
IN
= 3.6 V, I
= (V
= (V
for typical load regulation performance for loads less than 1 mA.
OUT
OUT
OUT
+ 1 V), I
IN
IN
IN
IN
OUT
+ 1 V), I
= 3.6 V, V
= 3.6 V, V
= 3.6 V, V
= 3.6 V, V
= 10 mA, V
= 10 mA, V
OUT
OUT
= 10 mA to 300 mA
OUT
OUT
OUT
OUT
= 10 mA to 300 mA
OUT
= 3.0 V
= 1.8 V
= 1.2 V
= 0.8 V
OUT
= 0.8 V
= 0.8 V
Min
0.45
0.001
Min
Typ
Typ
72
50
40
30
73
70
50
47
Max
Max
1
Unit
μV rms
μV rms
μV rms
μV rms
dB
dB
dB
dB
Unit
μF
Ω