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UC2306G-AD-S08-R [UTC]

Switching Regulator;
UC2306G-AD-S08-R
型号： UC2306G-AD-S08-R
厂家： Unisonic Technologies    Unisonic Technologies
描述：

Switching Regulator

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文件： 总12页 (文件大小：505K)
中文：  中文翻译
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UNISONIC TECHNOLOGIES CO., LTD  
UC2306  
LINEAR INTEGRATED CIRCUIT  
MICROPOWER DC/DC  
CONVERTERS WITH  
LOW-BATTERY DETECTOR  
ACTIVE IN SHUTDOWN  
DIP-8  
DESCRIPTION  
The UTC UC2306 is a step-up DC/DC converter which  
operate from a wide input supply range of 1.5V to 8V. Its  
peak switch current can be reduced by adding a single  
resistor at the ILIM pin. It is an ideal for use in small, low  
voltage, battery-operated systems.  
SOP-8  
FEATURES  
*In shutdown mode:10μA quiescent current.  
*Low battery detector active  
*Minimum Operating Voltage: 1.5V  
*Very Low VCESAT: 370mV@1A (typ).  
*In active mode :120μA quiescent current.  
*Only by one resistor: peak current is programmable.  
ORDERING INFORMATION  
Ordering Number  
Package  
Packing  
Lead Free  
Halogen Free  
UC2306L-xx-D08-T  
UC2306L-xx-S08-T  
UC2306L-xx-S08-R  
UC2306G-xx-D08-T  
UC2306G-xx-S08-T  
UC2306G-xx-S08-R  
DIP-8  
SOP-8  
SOP-8  
Tube  
Tube  
Tape Reel  
UC2306L-xx-D08-T  
(1)Packing Type  
(1) T: Tube, R: Tape Reel  
(2) D08: DIP-8, S08: SOP-8  
(2)Package Type  
(3)Voltage Code  
(4)Lead Plating  
(3) xx: refer to Output Voltage Code  
(4) L: Lead Free, G: Halogen Free  
www.unisonic.com.tw  
Copyright © 2013 Unisonic Technologies Co., Ltd  
1 of 12  
QW-R103-029.C  
UC2306  
LINEAR INTEGRATED CIRCUIT  
MARKING INFORMATION  
PACKAGE  
VOLTAGE CODE  
MARKING  
33: 3.3V  
50: 5.0V  
AD: ADJ  
DIP-8  
SOP-8  
PIN CONFIGURATION  
LBI  
LBO  
VIN  
1
2
3
4
8
7
6
5
FB(SENSE)  
SHDN  
ILI M  
GND  
SW  
PIN DESCRIPTION  
PIN No.  
SYMBOL  
LBI  
DESCRIPTION  
Input of Low Battery Detector. Detector output is low when voltage on this pin is less  
1
than 1.17V.  
2
3
4
5
LBO  
VIN  
Output of Low Battery Detector.  
Input Voltage Supply.  
SW  
The Collector Pin of Power NPN.  
GND  
Ground.  
Pin For Current Limit Set. Connected to nothing for 1A peak switch current; and  
connect to a resistor to ground will lower peak current  
Input of Shutdown.Held low, then switching regulator is turned off. This Pin should not  
be float. When SHDN mode is not used, connect it to VIN  
This pin connects to the resistor divider. In shutdown mode,the divider is disconnected  
from it.  
6
7
8
ILIM  
SHDN  
FB/SENSE  
UNISONIC TECHNOLOGIES CO., LTD  
2 of 12  
www.unisonic.com.tw  
QW-R103-029.C  
UC2306  
LINEAR INTEGRATED CIRCUIT  
BLOCK DIAGRAMS  
R3  
1.5V  
UNDER  
VOLTAGE  
LOCKOUT  
FB  
8
TIMERS 6μs ON  
1.5μs OFF  
ENABLE  
-
A1  
VIN  
+
3
VIN  
C1  
R4  
+
1.24V  
VREF  
DRIVER  
36mV  
+
-
L1  
R1  
7.2Ω  
A2  
LBO  
2
1
R2  
1K  
SW  
4
LBI  
+
-
Q1  
×200  
Q2  
×1  
A3  
D1  
1.17V  
BIAS -1V  
Q3  
VOUT  
+
C2  
1K  
ILIM  
SHUTDOWN  
SHDN  
GND  
7
6
5
UC2306 Block Diagram.  
Note：A3 Remains Alive When Device Is in Shutdown  
UC2306-3.3/UC2306-5.0 Block Diagram  
UNISONIC TECHNOLOGIES CO., LTD  
3 of 12  
QW-R103-029.C  
www.unisonic.com.tw  
UC2306  
LINEAR INTEGRATED CIRCUIT  
ABSOLUTE MAXIMUM RATINGS  
PARAMETER  
SYMBOL  
VIN  
RATING  
UNIT  
V
Input Voltage  
SW Voltage  
8
VSW  
-0.4 ~ +25  
V
FB Voltage(UC2306)  
ILIM Voltage(UC2306-3.3/UC2306-5.0)  
SHDN Voltage  
VFB  
VIN+0.3  
V
VILIM  
VSHDN  
VLBI  
5
V
6
VIN  
V
LBI Voltage  
V
LBO Voltage  
VLBO  
PD  
8
V
Maximum Power Dissipation  
Junction Temperature  
Operating Temperature  
Storage Temperature  
500  
mW  
C  
C  
C  
TJ  
125  
TOPR  
TSTG  
-20 ~ +85  
-65 ~ +150  
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 (VIN=2V, VSHDN=2V, unless otherwise specified)  
PARAMETER  
SYMBOL  
VCC(MIN)  
VIN  
TEST CONDITIONS  
MIN  
TYP MAX UNIT  
Minimum Operating Voltage  
Operating Voltage  
1.5  
1.65  
8
V
V
V SHDN =2V, Not switching(Note)  
VSHDN =0V, VIN=2V(Note)  
VSHDN =0V, VIN=5V(Note)  
(Note)  
Quiescent Current  
IQ  
120  
7
200  
15  
µA  
µA  
µA  
V
Quiescent Current In Shutdown  
ISD  
27  
50  
Comparator Trip Point  
FB Pin Bias Current  
1.22  
1.10  
1.24  
10  
1.26  
25  
IFB  
(Note)  
nA  
V SHDN =0V, Fixed Output  
Versions(Note)  
Sense Pin Leakage in Shutdown  
ILEAK(SD)  
0.002  
1
µA  
Line Regulation  
∆VOUT 1.8V≤VIN≤8V (Note)  
0.04  
1.17  
6
0.15  
1.25  
20  
%/V  
V
LBI Input Threshold  
LBI Bias Current  
VLBI(THR) Falling Edge(Note)  
ILBI (BIAS)  
(Note)  
nA  
mV  
V
LBI Input Hysteresis  
LBO Output Voltage Low  
LBO Output Leakage Current  
ILBI (HYS) (Note)  
35  
65  
VLBO(OL) ISINK=500µA(Note)  
0.2  
0.01  
0.4  
0.1  
ILBO(LEAK)  
LBI=1.5V, LBO=5V(Note)  
(Note)  
µA  
V
High  
Low  
1.4  
V
SHDN Input Voltage  
SHDN  
(Note)  
V SHDN =5V(Note)  
V SHDN =0V(Note)  
0.4  
8
V
5
-2  
µA  
µA  
µs  
µs  
%
I SHDN  
SHDN Pin Bias Current  
-5  
1
Switching Off Time  
Switch On Time  
tOFF  
tON  
(Note)  
1.5  
6
2
8
Current Limit Not Asserted (Note)  
Current Limit Not Asserted (Note)  
4
Maximum Duty Cycle  
tDUTY  
76  
0.8  
80  
88  
1.2  
I
LIM Pin Open, VIN=5V  
1
A
Peak Switch Current  
I (SW)  
20K from ILIM to GND  
Isw=1A  
500  
0.37  
0.26  
0.01  
mA  
V
Switch Saturation Voltage  
Switch Leakage  
VSW(SAT)  
Isw=700mA(Note)  
0.35  
7
V
ILEAK(SW) Switch off, Vsw=5V  
µA  
Note: Denotes specifications which apply over the 0C to 70C operating temperature range.  
UNISONIC TECHNOLOGIES CO., LTD  
4 of 12  
www.unisonic.com.tw  
QW-R103-029.C  
UC2306  
LINEAR INTEGRATED CIRCUIT  
TYPICAL APPLICATION  
Super Burst Low IQ DC/DC Converter  
MBRS130L  
μ H  
33  
IQ ≈ 10μA  
5V  
100mA  
0.01μF  
3.83M  
(1%metal film)  
V IN  
LBO  
SW  
LBI  
200K  
47K  
+
UC2306  
100 μF  
2 CELLS  
FB  
ILIM  
+
1.21M  
220 μ F  
GND  
SHDN  
(1%metal film)  
22K  
2N3906  
47K  
UNISONIC TECHNOLOGIES CO., LTD  
5 of 12  
www.unisonic.com.tw  
QW-R103-029.C  
UC2306  
LINEAR INTEGRATED CIRCUIT  
TYPICAL APPLICATION(Cont.)  
3.3V SEPIC Efficiency(Step-Up/Step-Down Converter)  
MBRS130L  
L1A  
VIN  
2
1
2.5V to 8V  
C1  
1 μF  
4
3
C2  
47 μ F  
16V  
+
VIN  
SW  
L1B*  
UC2306-3.3  
3.3V  
300mA  
SENSE  
GND  
SHDN  
I LIM  
SHUTDOWN  
C3  
100μF  
10V  
+
NC  
5V SEPIC (Step-Up/Step-Down Converter)  
MBRS130L  
L1A  
VIN  
2
1
3V to 8V  
C1  
1 μF  
4
3
+
47 μ F  
VIN  
SW  
L1B  
16V  
UC2306-5.0  
5V  
200mA  
SENSE  
GND  
SHDN  
I LIM  
SHUTDOWN  
+
100μF  
10V  
NC  
UNISONIC TECHNOLOGIES CO., LTD  
6 of 12  
www.unisonic.com.tw  
QW-R103-029.C  
UC2306  
LINEAR INTEGRATED CIRCUIT  
TYPICAL APPLICATION(Cont.)  
Single Li-lon Cell to 5V Converter with Load Disconnect at VIN＜2.7V  
22μH  
5V  
MBRS130L  
+
562k  
1%  
220k  
NC  
VOUT  
VIN2  
100μF  
VOUT  
VIN1  
VIN  
SW  
ILIM  
SENSE  
NC  
NC  
SINGLE  
LI-ION  
CELL  
LBI  
UC2306-5.0  
432k  
1%  
VINS  
EN  
VIN3  
SHDN  
GND  
LBO  
GND  
+
100μF  
10V  
+
1μF  
UNISONIC TECHNOLOGIES CO., LTD  
7 of 12  
QW-R103-029.C  
www.unisonic.com.tw  
UC2306  
LINEAR INTEGRATED CIRCUIT  
TYPICAL APPLICATION(Cont.)  
2- TO 4- Cell to 5V Converter with Output Disconnect  
2K  
ZTX788B  
L1  
22μH  
MBRS130L  
5V  
100mA  
VIN  
2V to 6V  
SW  
SENSE  
VIN  
+
UC2306-5.0  
47μF  
SHUTDOWN  
SHDN  
ILIM  
+
+
GND  
22μF  
220μF  
NC  
UNISONIC TECHNOLOGIES CO., LTD  
8 of 12  
www.unisonic.com.tw  
QW-R103-029.C  
UC2306  
LINEAR INTEGRATED CIRCUIT  
TYPICAL APPLICATION(Cont.)  
UNISONIC TECHNOLOGIES CO., LTD  
9 of 12  
www.unisonic.com.tw  
QW-R103-029.C  
UC2306  
LINEAR INTEGRATED CIRCUIT  
TYPICAL CHARACTERISTICS  
Super Burst Efficiency  
90  
80  
VIN=3V  
70  
60  
VIN=2V  
50  
40  
0.1  
1.0  
10  
100  
0.01  
Load Current (m)  
5V to 12V Converter Efficiency  
90  
85  
80  
75  
70  
65  
1
10  
100  
300  
Load Current(mA)  
UNISONIC TECHNOLOGIES CO., LTD  
10 of 12  
www.unisonic.com.tw  
QW-R103-029.C  
UC2306  
LINEAR INTEGRATED CIRCUIT  
TYPICAL CHARACTERISTICS(Cont.)  
Peak Switch Current Limit  
1.3  
Switch Saturation Voltage  
TA =25°C  
500  
400  
1.2  
1.1  
300  
200  
1.0  
0.9  
0.8  
0.7  
0.6  
100  
0
-50 -25  
0
25  
50  
75 100  
0
0.2  
0.4  
0.6  
0.8 1.0 1.2  
Temperature(°C)  
Switch Current (A)  
On-and Off-times  
Feedback Voltage  
8
1.250  
1.245  
1.240  
1.235  
1.230  
Maximum On-  
Time  
7
6
5
4
3
1.225  
1.220  
1.215  
1.210  
1.205  
1.200  
Off-Time  
2
1
0
-50 -25  
0
25  
50  
75 100  
-50 -25  
0
25  
50  
75 100  
Temperature(°C)  
Temperature(°C)  
Supply Current  
Feedback Pin Bias Current  
20  
18  
16  
300  
250  
TA =25°C  
14  
12  
10  
8
VSHDN=VN  
NOT SWITCHING  
200  
150  
100  
6
4
2
0
VSHDN= 0 V  
50  
0
-50 -25  
0
25  
50  
75 100  
0
1
2
3
4
5
6
7
8
Temperature(°C)  
Input Voltage (V)  
UNISONIC TECHNOLOGIES CO., LTD  
11 of 12  
www.unisonic.com.tw  
QW-R103-029.C  
UC2306  
LINEAR INTEGRATED 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  
12 of 12  
www.unisonic.com.tw  
QW-R103-029.C  

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