Voltage Regulators
AN8018SA
1.8-volt 2-channel step-up, step-down,
or inverting DC-DC converter control IC
Unit: mm
s
Overview
The AN8018SA is a two-channel PWM DC-DC con-
verter control IC that features low-voltage operation.
This IC can obtain the step-up, step-down and invert-
ing voltages with a small number of external components.
The minimum operating voltage is as low as 1.8 V so
that it can operate with two dry batteries. In addition,
since it uses the 16-pin surface mounting type package
with 0.65 mm pitch, it is suitable for miniaturized highly
efficient potable power supply.
5.0±0.2
16
9
(1.0)
4.4±0.2
6.4±0.3
0.15
−0.
05
+0.
10
0° to 10°
0.5±0.2
s
Features
(0.225)
0.65
0.22
−
0.05
+0.10
0.1±0.1
1.2±0.2
1
8
Seating plane
•
Wide operating supply voltage range (1.8 V to 14 V)
•
Incorporating a high precision reference voltage circuit
SSOP016-P-0225A
(allowance:
±
2%)
•
Control in a wide output frequency range is possible
(20 kHz to 1 MHz).
•
Built-in wideband error amplifier (single gain bandwidth
10 MHz typical)
•
Built-in timer latch short-circuit protection circuit
(charge current 1.1
µA
typical)
•
Incorporating the under-voltage lock-out circuit (U.V.L.O.)
(circuit operation-starting voltage 1.67 V typical)
•
Dead-time is variable.
•
Flatness of switching current can be obtained by staggering the turn-on timing of each channel.
•
Built-in unlatch function
When DT1 pin is low level, or DT2 pin is high level, independent turn-off is possible.
•
Incorporating a on/off control function
(active-high control input, standby mode current: 5
µA
maximum)
•
Parallel operation is possible.
•
Output block
• Totem pole 1 output
• Output source-current:
−50
mA maximum
(
Constant current output with a less supply voltage fluctuation is
possible by connecting an external resistor to pin 11)
• Output sink-current:
+80
mA maximum
• Open-collector 1 output
• Output current: 50 mA maximum
s
Applications
•
LCD displays, digital still cameras, and PDAs
1
PANASONIC [ PANASONIC SEMICONDUCTOR ]
