鈥?/div>
Low dropout voltage
Load regulation: 0.05% typical
Current limit
On-chip thermal limiting
Standard SOT-223 and TO-252 packages
Three-terminal adjustable or 鏗亁ed 1.8V, 2.5V, 3.3V or 5V
Speci鏗乪d from -40擄C to +125擄C
Description
The FAN1616A, FAN1616A-1.8, -2.5, -3.3 and -5 are low
dropout three-terminal regulators with 0.5A output current
capability. These devices have been optimized for applica-
tions where transient response and minimum dropout voltage
are critical. The 5V version is designed also to be used in
USB Hub and Motherboard applications.
On-chip thermal limiting provides protection against any
combination of overload and ambient temperature that
would create excessive junction temperatures.
Unlike PNP type regulators where up to 10% of the output
current is wasted as quiescent current, the bias current of the
FAN1616A 鏗俹ws into the load, increasing ef鏗乧iency.
The FAN1616A series regulators are available in the
industry-standard SOT-223 and TO-252 power packages.
Applications
鈥?USB Controlled Power Supply
鈥?High ef鏗乧iency linear regulators for Mixed Voltage
Logic, ASIC, FPGA based systems
鈥?Post regulators for switching supplies
鈥?Battery chargers
鈥?12V to 5V, 3.3V, 2.5V, 1.8V, or adj linear regulators
鈥?Motherboard clock supplies
鈥?SDRAM Module supplies
Typical Applications
FAN1616A
V
IN
= 12V
10碌F
ADJ
+
V
IN
V
OUT
R1
124鈩?/div>
+
22碌F
9V at 0.5A
V
OUT
= V
REF
(1 + R2/R1) + I
Adj
鈥?R2
R2
768鈩?/div>
FAN1616A-3.3
V
IN
= 9V
10碌F
GND
+
V
IN
V
OUT
+
22碌F
3.3V at 0.5A
REV. 1.0.5 3/1/02
next