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GO-Compatible
Synchronous Step-Down DC/DC High Efficiency :92% Low Ripple Voltage :10mV Output Current :500mA (VIN=3.0V, VOUT=1.8V)* Oscillation Frequency :600kHz, 1.2MHz www.DataSheet4U.com PWM Fixed Control :(XC9215 series) PWM/PFM Automatic Switching Control :(XC9216 series) Manual Selection of Switching Control :(XC9217 series) Maximum Duty Ratio :100% Ceramic Capacitor Compatible Ultra Small Packages :SOT-25, USP-6B
APPLICATIONS
Mobile phones (PDC, GSM, CDMA, IMT200 etc.) Bluetooth equipment PDAs Portable communication modem Portable games Cameras Digital cameras Cordless phones Notebook computers
FEATURES
P-ch Driver Tr. Built-in :ON resistance 0.6 N-ch Synchronous Driver Tr. Built-in :ON resistance 0.7 Input Voltage Range :2.0 ~ 6.0V Output Voltage Range :0.9V~4.0V (100mV increments) High Efficiency :92% (TYP.) (VIN=3.0V, VOUT=1.8V, IOUT=100mA)* Output current :500mA (VIN=3.0V, VOUT=1.8V)* Oscillation Frequency :600kHz, 1.2MHz (Fixed frequency accuracy 15%) Ultra Small Packages :SOT-25 USP-6B Soft-start circuit built-in Current limiter circuit built-in (constant current & latching) Low ESR ceramic capacitor compatible * Performance depends on external components and wiring on the PCB.
GENERAL DESCRIPTION
The XC9215/9216/9217 series is a group of synchronous-rectification type DC/DC converters with a built-in 0.6 P-channel driver transistor and 0.7 N-channel switching transistor, designed to allow the use of ceramic capacitors. The ICs enable a high efficiency, stable power supply with an output current of 500mA to be configured using only a coil and two capacitors connected externally. Minimum operating voltage is 2.0V. Output voltage is internally programmable in a range from 0.9V to 4.0V in increments of 100mV (accuracy: 2.0%). With the built-in oscillator, oscillation frequency is selectable from 600kHz and 1.2MHz to make available the frequency best suited to your particular application. As for operation mode, the XC9215 series is PWM control, the XC9216 series is automatic PWM/PFM switching control and the XC9217 series can be manually switched between the PWM control mode and the automatic PWM/PFM switching control mode, allowing fast response, low ripple and high efficiency over the full range of load (from light load to high output current conditions). The soft start and current control functions are internally optimized. During standby, all circuits are shutdown to reduce current consumption to as low as 1.0 A or less. With the built-in U.V.L.O. (Under Voltage Lock Out) function, the internal P channel driver transistor is forced OFF when input voltage becomes 1.4V or lower. Two types of package, SOT-25 (250mW) and USP-6B (100 mW), are available.
TYPICAL PERFORMANCE CHARACTERISTICS
Effciency vs. Output Current
XC9217A18C 100
L=3.3 H(CDRH3D16), CIN=4.7 F(ceramic), CL=10 F(ceramic), T opr=25
TYPICAL APPLICATION CIRCUIT
VIN CIN (ceramic) CE/MODE L 1 2 3 VIN VSS
CE/ VOUT MODE Lx
5
VOUT (500mA) CL (ceramic)
Efficiency:EFFI(%)
90 80 70 60 50 40 30 20 10 0 0.1 1 10 100 Output Current:IOUT(mA) 1000
PWM /PFM Automatic Switching Control PWM Control
VIN=5.0V VIN=3.6V VIN=2.7V
4
679
XC9215/9216/9217 Series
PIN CONFIGURATION
SOT-25 (TOP VIEW)
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USP-6B (BOTTOM VIEW)
* Please short the VSS pin (pin no. 2 and 5) before use. Please use the circuit without connecting the heat dissipation pad. If the pad must be connected due to a problem of heat dissipation or mounting intensity, connect to the VSS pin (pin no. 5).
PIN CONFIGURATION
PIN NUMBER SOT-25 USP-6B 1 6 2 2, 5 3 4 4 3 5 1 PIN NAME VIN VSS CE / MODE VOUT Lx FUNCTION Power Input Ground Chip Enable / Mode Switch Output Voltage Sense Switching Output
PRODUCT CLASSIFICATION
Ordering Information XC9215 XC9216 XC9217
DESIGNATOR
PWM fixed control PWM / PFM automatic switching control PWM fixed control PWM / PFM automatic switching, manual switching
SYMBOL A B C D 09 ~ 40 6 C M D R L DESCRIPTION : CE input logic High Active, CE pin open (Standard) : CE input logic Low Active, CE pin open (Semi-custom) : CE input logic High Active, Pull-down resistor built-in (Semi-custom) :CE input logic Low Active, Pull-up resistor built-in (Semi-custom) : 100mV increments e.g. VOUT = 1.5V : 600kHz : 1.2MHz : SOT-25 (SOT-23-5) : USP-6B : Embossed tape, Standard feed : Embossed tape, Reverse feed = 1, =5
DESCRIPTION Type of DC/DC Converter Transistor Built-In, Output Voltage Internally Set (VOUT Product), Soft Start Internally Set, Current Limit 700mA Output voltage
Oscillation Frequency
Package
Device Orientation
680
XC9215/9216/9217
Series
PACKAGING INFORMATION
SOT-25
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USP-6B
2.0 + 0.15 (0.45) 0.5+0.1 (0.05)
O
(0.27) (0.27) 0.005 +0.002
1
1 2 3
6 5 4
1.8+0.15
(0.27)
(
(0.45) (0.45)
(0.125)
45 O
O 45
45
O
45
A
0.45)
A'
O
+0.15 (0.65) -0.05
0.7+0.03
1
A - A Cross Sectional View
4
5-0.2+0.05
3 2
0.5+0.1 0.5+0.1
1.6+0.15
5
* Pin no. 1 is thicker than other pins.
0.2+0.05
1
1.0+0.1
1
.