AS1353-26-T austriamicrosystems, AS1353-26-T Datasheet - Page 10

• Manufacturer Part Number: AS1353-26-T
• Description: IC REG LDO 150MA 2.6V TSOT23-5
• Manufacturer: austriamicrosystems

Specifications of AS1353-26-T

• Package / Case: SOT-23-5, SC-74A, SOT-25
• Mounting Type: Surface Mount
• Current - Output: 150mA (Min)
• Voltage - Output: 2.6V
• Voltage - Input: Up to 5.5V
• Operating Temperature: -40°C ~ 85°C
• Regulator Topology: Positive Fixed
• Voltage - Dropout (typical): 0.06V @ 150mA
• Number Of Regulators: 1
• Current - Limit (min): 160mA
• Primary Input Voltage: 3.6V
• Output Voltage Fixed: 2.6V
• Dropout Voltage Vdo: 60mV
• No. Of Pins: 5
• Output Current: 150mA
• Operating Temperature Range: -40°C To +85°C
• Filter Terminals: SMD
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

AS1353/AS1356
Data Sheet
9 Typical Application
Figure 13. Typical Application Diagrams
Capacitor Selection and Regulator Stability
Ceramic capacitors are highly recommended as they offer distinct advantages over their tantalum and aluminum elec-
trolytic components.
For stable operation with load currents up to 150mA over the entire device temperature range, use a 1µF (min)
ceramic output capacitor with an ESR <0.2Ω.
Use large output capacitor values (10µF max) to reduce noise and improve load transient-response, stability and
power-supply rejection.
Note: Some ceramic capacitors exhibit large capacitance and ESR variations with variations in temperature. Z5U
Power Supply Rejection Ratio
The AS1353/AS1356 are designed to deliver low dropout voltages and low quiescent currents. Power-supply rejection
is 60dB (typ) at low frequencies. To improve power supply-noise rejection and transient response, increase the values
of the input and output bypass capacitors (see Figure 13).
The Typical Operating Characteristics (page 6) show the device line- and load-transient responses. See the Power-
Supply Rejection Ratio vs. Frequency graph in the Typical Operating Characteristics section (page 6) for further
details.
Dropout Voltage
For standard products with output voltage greater than the minimum V
ferential (dropout voltage) determines the lowest usable supply voltage. This determines the useful end-of-life battery
voltage in battery-powered systems.
The dropout voltage is a function of the P-MOSFET drain-to-source on-resistance multiplied by the load current, and is
calculated by:
Where:
R
I
See Typical Operating Characteristics (page 6) for further information.
www.austriamicrosystems.com
OUT
DS(ON)
On
Off
is the supply current.
+2.5 to
+5.5V
0.01µF
and Y5V capacitors may be required to ensure stability at temperatures below T
capacitors, a 1µF capacitor should be sufficient at all operating temperatures.
C
is the drain-to-source on-resistance.
BP
1µF
C
- Ty p i c a l A p p l i c a t i o n
IN
BP
SHDNM
IN
AS1353
GND
OUT
V
DROPOUT
C
1µF
OUT
Preset Output
1.5 to 3.6V,
150mA
= V
IN
- V
Revision 1.03
OUT
= R
On
Off
+2.5 to
+5.5V
DS(ON)
1µF
C
x I
IN
IN
OUT
(2.5V), the minimum input-output voltage dif-
SHDNM
GND
IN
AS1356
OUT
POK
AMB
= -10ºC. With X7R or X5R
100kΩ
C
1µF
OUT
Preset Output
1.5 to 3.6V,
processor
To Micro-
150mA
10 - 13
(EQ 3)