UC3206AG-XX-AF5-R [UTC]
CMOS IC;
| 型号： | UC3206AG-XX-AF5-R |
| 厂家： | 
Unisonic Technologies |
| 描述： | CMOS IC |
| 文件： | 总4页 (文件大小：210K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
UNISONIC TECHNOLOGIES CO., LTD
UC3206X
Preliminary
CMOS IC
600mA, 3MHz,
SYNCHRONOUS STEP-DOWN
DC/DC CONVERTER
DESCRIPTION
The UTC UC3206X is a high efficiency synchronous, step-down
DC/DC converter. Its input voltage range is from 2V to 6V, and
Output voltage is internally set in a range from 0.8V to 4.0V in
increments of 50mV (accuracy: ±2.0%).
The device is operated by 3.0MHz, and includes 0.42Ω
P-channel driver transistor and 0.52Ω N-channel switching
transistor. The device provides short-time turn-on by the soft start
function internally set in 0.25 ms (TYP).
FEATURES
* Input voltage: 2.0V~6.0V
* Output voltage: 0.8V~4.0V (+2.0%)
* P-ch ON resistance: 0.42Ω
* N-ch ON resistance: 0.52Ω
* Output current: 600mA
* Oscillation frequency: 3.0MHz (+15%)
* Maximum duty cycle: 100%
* High efficiency : 92% (TYP.)
* High speed soft-start circuit and Current limiter circuit built-in
* CL high speed auto discharge
* Low ESR ceramic capacitor compatible
ORDERING INFORMATION
Ordering Number
Package
SOT-25
Packing
Tape Reel
UC3206XG-xx-AF5-R
Note: xx: Output Voltage, refer to Marking Information.
UC3206XG-xx-AF5-R
(1)Packing Type
(1) R: Tape Reel
(2)Package Type
(2) AF5: SOT-25
(3)Output Voltage Code
(3) xx: Refer to Marking Information
(4) G: Halogen Free and Lead Free
(5) A:1.45MHz, B: 2.8MHz
(4)Green Package
(5)Frequency
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Copyright © 2016 Unisonic Technologies Co., Ltd
QW-R211-031.a
UC3206X
Preliminary
CMOS IC
MARKING
5
4
U206XG
Frequency: A, B
1
2
3
PIN CONFIGURATION
PIN DESCRIPTION
PIN NO.
PIN NAME
IN
DESCRIPTION
1
2
3
4
5
Power Input
Ground
GND
EN
Chip Enable & Mode Switch
Output Voltage
OUT
LX
Switching Output
BLOCK DIAGRAM
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UC3206X
Preliminary
CMOS IC
ABSOLUTE MAXIMUM RATING
PARAMETER
SYMBOL
VIN
RATINGS
6.5
UNIT
V
IN Pin Voltage
LX Pin Voltage
OUT Pin Voltage
EN Pin Voltage
Power Dissipation
VLx
6.5
V
VOUT
VEN
6.5
V
6.5
V
PD
250
mW
°C
°C
Operating Temperature Range
Storage Temperature Range
TOPR
TSTG
-40 ~ +85
-55 ~ +125
Note: Absolute maximum ratings are those values beyond which the device could be permanently damaged.
Absolute maximum ratings are stress ratings only and functional device operation is not implied.
ELECTRICAL CHARACTERISTICS (VOUT=1.8V, FOSC=3.0MHz, TA=25°C)
PARAMETER
SYMBOL
VOUT
TEST CONDITIONS
VIN=VEN=5.0V, IOUT=30mA
MIN TYP MAX UNIT
Output Voltage
1.764 1.800 1.836
V
V
Operating Voltage Range
Maximum Output Current
U.V.L.O. Voltage
VIN
6.0
IOUTMAX
VUVLO
IDD
VIN=VOUT(E)+2.0V, VEN=1.0V,
600
mA
V
1.00 1.40 1.78
60
Supply Current
VIN=VEN=5.0V, VOUT=VOUT(E)×1.1V
μA
μA
MHz
MHz
mA
%
Stand-by Current
ISTB
VIN=5.0V, VEN=0V, VOUT=VOUT(E)×1.1V
0
1.45
2.8
350
100
0
1.0
VIN=VOUT(E)+2.0V, VEN=1.0V,
OUT=100mA
UC3206A
UC3206B
Oscillation Frequency
FOSC
I
PFM Switching Current
Maximum Duty Cycle
Minimum Duty Cycle
Efficiency
IPFM
DMAX
DMIN
EFFI
VIN=VOUT(E)+2.0V, VEN=VIN, IOUT=1mA
VIN=VEN=5.0V, VOUT=VOUT(E)×0.9V
VIN=VEN=5.0V, VOUT=VOUT(E)×0.1V
VEN=VIN=VOUT(E)+1.2V, IOUT=100mA
%
92
%
Lx SW "H" ON Resistance
2
RLxH
RLxL
ILeakH
ILIM
VIN=VEN=3.6V, VOUT=0V, ILx=100mA
VIN=VEN=3.6V
0.42 0.67
0.52 0.77
0.01 1.0
Ω
Ω
Lx SW "L" ON Resistance 2
Lx SW "H" Leak Current
(Note 1)
VIN=VOUT=5.0V, VEN=0V, Lx=0V
VIN=VEN=5.0V, VOUT=VOUT(E)×0.9V
μA
mA
Current Limit
900
Output Voltage
Temperature
△VOUT
(VOUT·△TOPR
/
I
OUT=30mA, -40°C ≤Topr≤85°C
±100
ppm/°C
)
Characteristics
EN "H" Voltage
EN "L" Voltage
EN "H" Current
EN "L" Current
VENH
VENL
IENH
IENL
tSS
VOUT=0V
1.5
0
VIN
0.25
0.1
V
V
VOUT=0V
VIN=VEN=5.0V, VOUT=0V
VIN=5.0V, VEN=0V, VOUT=0V
VEN=0V→VIN , IOUT=1mA
VIN=VEN=5.0V, VOUT=0.8×VOUT(E)
Short Lx at 1Ω Resistance
-0.1
-0.1
-
μA
μA
ms
0.1
Soft Start Time
0.3
4
0.4
Latch Time
tLAT
ms
Short Protection Threshold
Voltage
VSHORT
RDischg
VIN=VEN=5.0V, Short Lx at 1Ω Resistance
0.900
100
V
CL Discharge
VIN=5.0V, Lx=5.0V, VEN=0V
Ω
Note: When temperature is high, a current of approximately 10μA (maximum) may leak.
UNISONIC TECHNOLOGIES CO., LTD
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QW-R211-031.a
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UC3206X
Preliminary
CMOS IC
OPERATIONAL DESCRIPTION
Soft Start
The UTC UC3206X provides 0.25ms (Typ.) high speed soft-start. Soft start time is defined as the time to reach
90% of the output nominal voltage when the EN pin is turned on.
UVLO Circuit
When the IN pin voltage becomes 1.4V or lower, the P-channel output driver transistor is forced OFF to prevent
false pulse output caused by unstable operation of the internal circuitry. When the IN pin voltage becomes 1.8V or
higher, switching operation takes place.
CL High Speed Discharge
The UTC UC3206X can quickly discharge the electric charge at the output capacitor (CL) when a low signal to the
EN pin which enables a whole IC circuit put into OFF state, is inputted via the N-channel transistor located between
the LX pin and the GND pin.
TYPICAL APPLICATION CIRCUIT
UTC assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or
other parameters) listed in products specifications of any and all UTC products described or contained
herein. UTC products are not designed for use in life support appliances, devices or systems where
malfunction of these products can be reasonably expected to result in personal injury. Reproduction in
whole or in part is prohibited without the prior written consent of the copyright owner. The information
presented in this document does not form part of any quotation or contract, is believed to be accurate
and reliable and may be changed without notice.
UNISONIC TECHNOLOGIES CO., LTD
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