XC9103/XC9104/XC9105 Series
■PIN CONFIGURATION
EXT
FB
GND
CE
The dissipation pad for the USP-6B
package should be solder-plated in
recommended mount pattern and metal
masking so as to enhance mounting
strength and heat release.
If the pad needs to be connected to other
pins, it should be connected to the VDD
(No.2) pin.
1 EXT
2 VDD
FB 6
NC 5
CE 4
VDD
3 GND
(TOP VIEW)
■PIN ASSIGNMENT
PIN NUMBER
PIN NAME
FUNCTION
SOT-25
USP-6B
1
2
6
2
FB
VDD
CE
Output Resistor Connection
Supply Voltage
Chip Enable
3
4
CE (/PWM)
GND
Serves as both PWM/PFM switching pin and CE pin for XC9105
4
5
-
3
1
5
Ground
EXT
External Transistor Connection
No Connection
NC
■PRODUCT CLASSIFICATION
●Ordering Information
XC9103①②③④⑤⑥: PWM Control
XC9104①②③④⑤⑥: PWM/PFM Automatic Switching Control
XC9105①②③④⑤⑥: PWM/PFM Manual Switching Control
DESIGNATOR
DESCRIPTION
Type of DC/DC Controller
Output Voltage
SYMBOL
DESCRIPTION
B
D
09
3
: With current limiter (180kHz, 300kHz only)
: Without current limiter
①
② ③
: FB voltage (e.g. FB Voltage=0.9V→②=0, ③=9)
: 300kHz
1
: 100kHz
: 180kHz
④
Oscillation Frequency
2
5
: 500kHz
: SOT-25 (SOT-23-5)
M
D
R
L
⑤
⑥
Package
: USP-6B
: Embossed tape, standard feed
: Embossed tape, reverse feed
Device Orientation
2/23
TOREX [ Torex Semiconductor ]
