en5322 Enpirion, en5322 Datasheet - Page 9

• Manufacturer Part Number: en5322
• Description: 2 A Voltage Mode Synchronous Buck Pwm Dc-dc Converter With Integrated Inductor
• Manufacturer: Enpirion

March 2008
Functional Description
The EN5322 leverages advanced CMOS
technology
frequency,
efficiency.
Packaged in a 4 mm x 6 mm x 1.1 mm QFN,
the EN5322 provides a high degree of flexibility
in circuit design while maintaining a very small
footprint. High switching frequency allows for
the use of very small MLCC input and output
filter capacitors.
The converter uses voltage mode control to
provide high noise immunity, low output
©Enpirion 2008 all rights reserved, E&OE
Output Over Load at No Load (V
Output Over Load at No Load (V
CH2: V
CH2: V
while
to
OUT,
OUT,
CH3: POK
CH3: POK
provide
also
,
,
CH4: I
CH4: I
maintaining
IN
IN
high
= 5 V, V
= 5 V, V
INDUCTOR
INDUCTOR
switching
OUT
OUT
= 1.2 V)
= 1.2 V)
high
9
Output Over Load at 2 A Load (V
Output Over Load at 2 A Load (V
impedance
response.
components are needed for most applications.
Output voltage is chosen from one of seven
preset values via a three-pin VID voltage select
scheme. An external divider option enables the
selection of any output voltage ≥ 0.6 V. The
VID pins can be toggled dynamically to
implement glitch-free dynamic voltage scaling
between any two VID preset values.
POK monitors the output voltage and signals if
it is within ±10% of nominal. Protection
CH2: V
CH2: V
OUT,
OUT,
and
No
CH3: POK
CH3: POK
excellent
external
,
,
CH4: I
CH4: I
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IN
IN
= 5 V, V
= 5 V, V
INDUCTOR
INDUCTOR
load
compensation
OUT
OUT
EN5322QI
transient
= 1.2 V)
= 1.2 V)