XC9519 TOREX [Torex Semiconductor], XC9519 Datasheet - Page 21

• Manufacturer Part Number: XC9519
• Description: Dual Output Step-Up/Inverting DC/DC Converter
• Manufacturer: TOREX [Torex Semiconductor]

■NOTES ON USE
1. For temporary, transitional voltage drop or voltage rising phenomenon, the IC is liable to malfunction should the ratings be exceeded.
2. The characteristics of this IC are highly dependent on peripheral circuits.
3. When the input voltage V
4. If the step-up ratio is high and excessive load current flows, the input current may be limited by the maximum duty limit and maximum current
5. Do not connect a component other than C
6. For external components, use the components specified in the standard circuit examples and component selection methods.
7. When the input voltage V
8. If the step-up ratio is low in a step-up DC/DC converter, the output voltage V
9. During PFM/PWM switching control (V
If a component other than C
limit protection and short-circuit protection may not activate.
the set output voltage may not be output.
(V
When selecting external components, refer to the specifications of each component and select so as not to exceed the ratings.
Some peripheral component selections may cause unstable operation.
Before use, sufficiently test operation using the actual equipment.
Step-up DC/DC Converter: PWM/PFM MODE
(V
Step-up DC/DC Converter: PWM/PFM MODE
(V
MODE
V
V
IN
IN
ENP
ENP
=3.6V, V
=4.4V, V
="H", V
= "H").
="H", V
OUTP
OUTP
ENN
ENN
=5.0V, I
=5.0V, I
="L", V
="L", V
time:20 μ s/div
time:10 μ s/div
OUTP
OUTP
MODE
MODE
IN
IN
=120mA
=200mA
="H")
="H")
is high and the output voltage V
is low and the output voltage V
L_VR
V
V
is connected, the output voltage V
OUT P
OUTP
MODE
:50mV/div
:20mV/div
= "H"), the output voltage may become unstable near switching between PFM mode and PWM mode.
L_VR
to the VREF pin.
<External Components>
<External Components>
C
L
SBD
P-ch MOS: EMH1303
R
C
L
SBD
P-ch MOS: EMH1303
R
P
P
LP
ZP
LP
ZP
=3.3 μ H (VLF5014S-3R3M2R0)
=3.3 μ H (VLF5014S-3R3M2R0)
=4×4.7 μ F
=7.5kΩ, C
=4×4.7 μ F
=7.5kΩ, C
P
P
: CMS03
: CMS03
OUTP
OUTP
/V
/V
OUTN
OUTN
ZP
ZP
OUTN
=4.7nF
=4.7nF
is high, the input current may be limited by the maximum duty limit and
is low, intermittent oscillation may occur during PWM control.
of an inverting DC/DC converter may become unstable.
OUTP
may become unstable during PFM/PWM switching control
XC9519
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Series