AS1324-BTTT-18 austriamicrosystems, AS1324-BTTT-18 Datasheet - Page 2

• Manufacturer Part Number: AS1324-BTTT-18
• Description: IC CONV BOOST 1.8V SOT23-5
• Manufacturer: austriamicrosystems
• Type: Step-Down (Buck), PWM - Current Moder

Specifications of AS1324-BTTT-18

• Internal Switch(s): Yes
• Synchronous Rectifier: Yes
• Number Of Outputs: 1
• Voltage - Output: 1.8V
• Current - Output: 600mA
• Frequency - Switching: 1.5MHz
• Voltage - Input: 2.7 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: SOT-23-5 Thin, TSOT-23-5
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: AS1324-BTTT-18TR

AS1324
Datasheet - P i n A s s i g n m e n t s
4 Pin Assignments
Figure 2. Pin Assignments (Top View)
4.1 Pin Descriptions
Table 2. Pin Descriptions
www.austriamicrosystems.com/DC-DC_Step-Down/AS1324
Pin Number
1
2
3
4
5
GND
Pin Name
SW
EN
V
GND
V
SW
V
EN
OUT
FB
IN
1
2
3
AS1324
Enable Input. Driving this pin above 1.5V enables the device. Driving this pin below 0.3V puts the
device in shutdown mode. In shutdown mode all functions are disabled while SW goes high
impedance, drawing <1µA supply current.
Note: This pin should not be left floating.
Ground.
Switch Node Connection to Inductor. This pin connects to the drains of the internal main and
synchronous power MOSFET switches.
Input Supply Voltage. This pin must be closely decoupled to GND with a ≥ 4.7µF ceramic capacitor.
Connect to any supply voltage between 2.7 to 5.5V.
Feedback Pin. This pin receives the feedback voltage from the external resistor divider across the
output. (Adjustable voltage variant only.)
Output Voltage Feedback Pin. An internal resistor divider steps the output voltage down for
comparison to the internal reference voltage. (Fixed voltage variants only.)
5 VFB
4 VIN
Revision 1.05
GND
SW
EN
Description
1
2
3
AS1324-12/
AS1324-15/
AS1324-18
5 VOUT
4 VIN
2 - 20