Datasheet > AS1330-BTDT-18

AS1330-BTDT-18

更新时间： 2022-12-16 21:18:50

品牌	Logo	应用领域
艾迈斯 - AMSCO		转换器升压转换器
页数	文件大小	规格书
16页	1498K
描述
4MHz, Low Voltage, DC-DC Step-Up Converter

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AS1330-BTDT-18 数据手册

AS1330

Datasheet - Pin Assignments

4 Pin Assignments

Figure 2. Pin Assignments (Top View)

VIN

SENSE 1

VOUT

AS1330

EN 3

POK

GND

Pin Descriptions

Table 1. Pin Descriptions

Pin Number

Pin Name

Description

Sense Input. Represents the input for the Power-OK behaviour. This input can be

used to supervise the input or the output voltage via a resistor divider. If connected

to GND the POK output is related to VOUT.

SENSE

Feedback Pin. Feedback input to the gm error amplifier. Connect a resistor divider

tap to this pin. The output voltage can be adjusted from 1.8 to 3.3V by: VOUT =

0.8V[1 + (R1/R2)]

If the fixed output voltage version ist used, connect this pin to VOUT.

Active-High Enable Input. A logic LOW reduces the supply current to < 1µA.

Connect to pin VIN for normal operation.

Power-OK Output. Active-High, open-drain output indicates an out-of-regulation

condition. Connect a 100kΩ pull-up resistor to pin OUT for logic levels. Leave this

pin unconnected if the Power-OK feature is not used.

Low Level:

High Level:

Signal and Power Ground. Provide a short, direct PCB path between this pin and

the negative side of the output capacitor(s).

Switch Pin. Connect an inductor between this pin and VIN. Keep the PCB trace

lengths as short and wide as is practical to reduce EMI and voltage overshoot. If

the inductor current falls to zero, or pin EN is low, an internal 100Ω anti-ringing

switch is connected from this pin to VIN to minimize EMI.

POK

GND

Note: An optional Schottky diode can be connected between this pin and VOUT.

Output Voltage. Bias is derived from VOUT when VOUT exceeds VIN. PCB trace

length from VOUT to the output filter capacitor(s) should be as short and wide as is

practical.

Input Voltage. The AS1330 gets its start-up bias from VIN unless VOUT exceeds

VIN, in which case the bias is derived from VOUT. Thus, once started, operation is

completely independent from VIN. Operation is only limited by the output power

level and the internal series resistance of the supply.

VOUT

VIN

Exposed Pad. The exposed pad must be connected to GND. Ensure a good

connection to the PCB to achieve optimal thermal performance.

www.austriamicrosystems.com/DC-DC_Step-Up/AS1330

Revision 1.04

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