AMS1505 Advanced Monolithic Systems, AMS1505 Datasheet - Page 3

• Manufacturer Part Number: AMS1505
• Description: 5A LOW DROPOUT VOLTAGE REGULATORS
• Manufacturer: Advanced Monolithic Systems

ELECTRICAL CHARACTERISTICS
Electrical Characteristics at I
Parameter
Dropout Voltage
Control Dropout
(V
Power Dropout
(V
Parameters identified with boldface type apply over the full operating temperature range.
Note 1:
Electrical Characteristics
Note 2:
Note 3:
input/output voltage required to maintain 1% regulation.
Note 4:
used to set the output voltage is selected to meet the minimum load current requirement.
Note 5:
minimum value is equal to the quiescent current of the device.
PIN FUNCTIONS
Sense (Pin 1): This pin is the positive side of the
reference voltage for the device. With this pin it is
possible to Kelvin sense the output voltage at the load.
Adjust (Pin 2/5): This pin is the negative side of the
reference voltage for the device. Adding a small bypass
capacitor from the Adjust pin to ground improves the
transient response. For fixed voltage devices the Adjust
pin is also brought out to allow the user to add a bypass
capacitor.
GND (Pin 2, 7-Lead only): For fixed voltage devices this
is the bottom of the resistor divider that sets the output
voltage.
Advanced Monolithic Systems, Inc. 6680B Sierra Lane, Dublin, CA 94568 Phone [phone] Fax [phone]
CONTROL
POWER
- V
Unless otherwise specified V
For the adjustable device the minimum load current is the minimum current required to maintain regulation. Normally the current in the resistor divider
Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. For guaranteed specifications and test conditions, see the
The dropout voltage for the AMS1505 is caused by either minimum control voltage or minimum power voltage. The specifications represent the minimum
The control pin current is the drive current required for the output transistor. This current will track output current with a ratio of about 1:100. The
- V
OUT
OUT
)
)
.
Device
AMS1505/-1.5/-2.5/
-2.85/-3.0/-3.3/-3.5/-5.0
AMS1505/-1.5/-2.5/
-2.85/-3.0/-3.3/-3.5/-5.0
The guaranteed specifications apply only for the test conditions listed.
OUT
OUT
= V
= 0 mA, and T
SENSE
. For the adjustable device V
Conditions
Note 2
V
V
V
V
POWER
POWER
CONTROL
CONTROL
J
= +25°C unless otherwise specified.
=V
=V
=V
=V
OUT
OUT
OUT
OUT
+ 0.8V, I
+ 0.8V, I
+ 2.5V, I
+ 2.5V, I
ADJ
LOAD
LOAD
LOAD
LOAD
= 0V.
= 10mA
= 5A
= 10mA
= 5A
V
device of the AMS1505. The output load current is
supplied through this pin. The voltage at this pin must
be between 0.1V and 0.8V greater than the output
voltage for the device to regulate.
V
control circuitry of the device. The current flow into
this pin will be about 1% of the output current. The
voltage at this pin must be 1.3V or greater than the
output voltage for the device to regulate.
Output (Pin 3/4): This is the power output of the
device.
POWER
CONTROL
(Pin 5/6): This pin is the collector to the power
(Pin 4/3): This pin is the supply pin for the
Min
1.00
1.15
Typ
.10
.45
AMS1505
Max
1.15
1.30
0.17
0.50
Units
V
V
V
V