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IXD9213/14

Doc. No. IXD9213_DS, Rev. N0

Characteristics subject to change without notice

PIN CONFIGURATION

PIN ASSIGNMENT

PIN NUMBER

PIN NAME FUNCTIONS

1 V

Power Input

2 NC No Connect

3 L

Switching Node

OUT

Fixed Output Voltage

5 AV

Analog Ground

6 CE Enable (Active HIGH); Do not leave this pin open

7 PV

Power Ground

8 L1 Inductor Connection

9 L2 Inductor Connection

BLOCK DIAGRAM

IXD9213/14 Series

Internal diodes include an ESD protection and a parasitic diode

BASIC OPERATION

The IXD9213/14 series consists of a Reference Voltage source, Error Amplifier, PWM Comparator, Phase

Compensation circuit, minimum on-time generator, output voltage resistive divider, P-channel switching transistor,

N-channel transistor for the synchronous switch, Current Limiter circuit, UVLO circuit, and others. (See the block

diagrams above.)

Device operates at a constant on-time mode, which features fast transient response and low output voltage ripple.

The Error Amplifier compares output voltage divided by internal resistors R

with the internal reference voltage.

Amplified difference between these two signals applies to the one input of the PWM Comparator, while ramp

voltage from minimum on-time generator applies to the second input. Resulting PWM pulse determines switching

transistor ON time. It goes through the Buffer and it appears at the gate of the internal P-channel switching

transistor. This continuous process stabilizes output voltage.

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Sharp IQ-9B01 Manual de usuario Pagina 4