1/18
XC9119D10A Series
1MHz, PWM Controlled,
Step-Up DC/DC Converter, Ceramic Capacitor Compatible
■GENERAL DESCRIPTION
The XC9119D10A series is 1MHz, PWM controlled step-up DC/DC converter, designed to allow the use of ceramic
capacitors. With a built-in 2.0Ω switching transistor, the XC9119D10A series can easily provide a step-up operation by using
only a coil, a diode, a capacitor, and a resistor, connected externally.
Since output voltage up to 19.5V (Maximum Lx operating voltage: 20V) can be derived with reference voltage supply of 1.0V
(±2.0%) and external components, the series can easily supply high voltage for various general-purpose power supplies, LCD
panels and organic EL displays.
With a high switching frequency of 1.0MHz, a low profile and small board area solution can be achieved using a chip coil and
an ultra small ceramic output capacitor.
With the current limit function (400mA (TYP.): V
DD=3.6V), a peak current, which flows through built-in driver transistors can be
limited. Soft-start time can be adjusted by external resistors and capacitors. The stand-by function enables the output to
be turned off (CE ’L’), that is, the supply current will be less than 1.0μA.
■TYPICAL APPLICATION CIRCUIT
■APPLICATIONS
●Organic electroluminescence display (OELD)
●Power supplies for LCDs
●Multi-function power supplies
■FEATURES
Operating Voltage Range : 2.5V ~ 6.0V
Output Voltage Range : Up to 19.5V externally set-up
: Reference voltage 1.0V +2.0%
Oscillation Frequency : 1.0MHz±20%
ON Resistance : 2.0Ω (V
DD=3.6V, VDS=0.4V)
Efficiency : 86%
(V
OUT
=15V, V
DD
=3.6V, I
OUT
=10mA)
Control : PWM control
Stand-by function : I
STB
=1.0μA (MAX.)
Load Capacitor : Low ESR ceramic capacitor
Ultra Small Packages : SOT-25, USP-6C
Lx Limit Current : 400mA (V
DD
=3.6V)
■TYPICAL PERFORMANCE
CHARACTERISTICS
○Efficiency vs. Output Current
0
10
20
30
40
50
60
70
80
90
100
0.1 1 10 100 1000
Output Current: I
OUT
(mA)
Efficiency: EFFI(%)
6V
5V
4.2V
3.6V
3V
2.7V
VIN=2.5V
Ta=25
o
C
XC9119D10A
ETR0408_009
2/18
XC9119D10A Series
PIN NUMBER
PIN NAME FUNCTION
SOT-25 USP-6C
1 2 Lx Switch
2 3 VSS Ground
3 1 FB Voltage Feedback
4 6 CE/SS Chip Enable/ Soft Start
5 4 VDD Power Input
- 5 NC No Connection
DESIGNATOR ITEM SYMBOL DESCRIPTION
①② Reference Voltage 10 FB voltage
③ Oscillation Frequency A 1MHz
④⑤-⑥
Packages
(Order Unit)
MR SOT-25 (3,000/Reel)
MR-G SOT-25 (3,000/Reel)
ER USP-6C (3,000/Reel)
ER-G USP-6C (3,000/Reel)
CE/SS PIN OPERATIONAL STATE
H Operation
L Shut-down
■PIN CONFIGURATION
SOT-25
(TOP VIEW)
USP-6C
(BOTTOM VIEW)
■PIN ASSIGNMENT
■CE PIN FUNCTION
■PRODUCT CLASSIFICATION
●Ordering Information
XC9119D①②③④⑤-⑥
(*1)
*The dissipation pad for the USP-6C
package should be solder-plated in
recommended mount pattern and metal
masking so as to enhance mounting
strength and heat resistance. If the pad
needs to be connected to other pins, it
should be connected to the V
SS pin.
(*1)
The “-G” suffix denotes Halogen and Antimony free as well as being fully EU RoHS compliant.