EP5352Q Datasheet, PDF (11/16 Pages) Enpirion, Inc. – 500/600/800mA Synchronous Buck Regulators With Integrated Inductor

EP5382Q/EP5362Q/EP5352Q
VS2
17
VS1 ¹⁸
VS0
19
ENABLE ²⁰
10 NC
9 NC
8 NC
7 _VOUT
V_IN
4.7uF/2.2uF
(see layout recommendation 3)
10μF
V_OUT
Figure 6. Example application, Vout=1.2V.
Figure 7 shows an example schematic using an external voltage divider. VS0=VS1=VS2= “1”. The
resistor values are chosen to give an output voltage of 2.6V.
VS2 ¹⁷
VS1 ¹⁸
VS0
19
ENABLE ²⁰
10 NC
9 NC
8 NC
7 _VOUT
Rb=60K
Ra=200K
V_IN
4.7uF
10μF
(see layout recommendation 3)
V_OUT
Figure 7. Schematic showing the use of external divider option, Vout = 2.6V.
Figure 8 shows two example board layouts. Note the placement of the input and output capacitors.
They are placed close to the device to minimize the physical area of the AC current loops. Note the
placement of the vias per recommendation 3.
©Enpirion 2009 all rights reserved, E&OE
03132
11
4/28/2009
www.enpirion.com
Rev:B