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CYT2606 [ETC]

; - 12号的铝制车身绘（ RAL 7032 ）
CYT2606
型号： CYT2606
厂家： ETC    ETC
描述：


- 12号的铝制车身绘（ RAL 7032 ）
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CYT 2606  
PFM Step-Up DC-DC Converter  
General Description  
Features  
■
■
■
■
■
■
260KHz Maximum Operation Frequency  
The CYT2606 Series are PFM step-up  
DC-DC converters with very low ripple noise  
due to the high operation frequency. The  
maximum operation frequency is 260KHz.  
2.0V to 5.0V Output Voltage With 0.1V Step  
Low Start-up Voltage: 0.8V at 1mA  
±2.5% Output Voltage Accuracy  
Up to 88% Efficiency  
Only three components are required to  
realize the conversion from the battery voltage  
to a selected output voltage.  
Output current: 300mA at 2.5V input, 3.3V  
output  
■
■
Low Ripple and Low Noise  
Output Current Extendable by External  
Switch  
A driver pin (EXT) is provided for driving  
external power transistor to extend the output  
current capability where large current is  
required. Enable pin (EN) is also provided so  
that the circuit can be powered down.  
Applications  
■
Power source for applications where a higher  
voltage than the battery voltage is required  
One to three cell battery devices  
Power source for cameras  
■
■
■
■
camcorders  
VCRs, PDAs, LED and hand held  
communication instrument  
SOT-23-5 Package  
SOT-89 Package  
ShenZhen CYT IC Design CO ,Ltd  
1
CYT 2606  
Pin Configuration  
1.GND  
2.OUT  
3.LX  
1.EN  
2.VOUT  
3.NC  
4.GND  
5.LX  
SOT-23-5  
Typical Application  
VIN  
L: 33uH  
IN5819  
CYT2606  
VOUT  
LX  
VOUT  
GND  
C:22uF  
ShenZhen CYT IC Design CO ,Ltd  
2
CYT 2606  
Block Diagram  
Ordering Information  
CYT2606-  
X
X
X
X
Package Type:  
T: SOT-23-3  
F: SOT-23-5  
E: SOT-89  
Output Voltage:  
20: 2.0V  
21: 2.1V  
┄
49: 4.9V  
50: 5.0V  
External Switch  
E: use external switch  
L: use internal switch  
ShenZhen CYT IC Design CO ,Ltd  
3
CYT 2606  
Pin Assignment  
Part Marking and Package Type  
Pin  
Name  
CYT2606 CYT2606 CYT2606 CYT2606  
CYT2606  
CYT2606  
Description  
LXXT  
LXXF  
LXXE  
EXXT  
EXXF  
EXXE  
LX  
EXT  
VOUT  
EN  
2
-
5
-
3
-
-
2
3
-
-
-
3
2
-
Switching pin  
Buffer output for external transistor  
Output voltage  
5
2
1
4
3
3
-
2
1
4
3
2
-
Chip enable (active high)  
Ground  
GND  
NC  
1
-
1
-
1
-
1
-
No connection  
Absolute Maximum Ratings  
Type  
Symbol  
Description  
Value  
Unit  
Vmax  
Maximum voltage on VOUT and VLX pins  
Voltage range on EXT and EN pins  
Maximum current on LX pin  
8
-0.3-VOUT+0.3  
1000  
V
V
Voltage  
Current  
Vmin-max  
ILXmax  
mA  
mA  
W
IEXTmax  
Maximum current on EXT pin  
100  
Psot-23-3 Maximum Power dissipation for SOT-23-3 package  
Psot-23-5 Maximum Power dissipation for SOT-23-5 package  
0.25  
Power  
dissipation  
0.25  
0.5  
W
W
Psot-89  
Tmin-max  
Tstorage  
VESD  
Maximum Power dissipation for SOT-89 package  
Operation temperature range  
-20-85  
-40-165  
2000  
oC  
oC  
V
Thermal  
ESD  
Storage temperature range  
ESD voltage for human body mode  
ShenZhen CYT IC Design CO ,Ltd  
4
CYT 2606  
Electrical Characteristics  
VIN = 5V; IOUT = 10mA, CIN = 2.2µF; COUT = 2.2µF; TJ = 25°C; unless otherwise specified.  
Symbol  
Test Condition  
Min  
Typ Max Unit  
Parameter  
Output voltage accuracy  
Maximum input voltage  
Start-up voltage  
△VOUT  
VINMAX  
VSTART  
VHOLD  
FMAX  
-2  
2
%
V
0.7  
VOUT  
0.85  
ILOAD=1mA, VIN:0→2V  
ILOAD=1mA, VIN:2→0V  
V
Hold-on voltage  
0.6  
220  
75  
V
Maximum oscillation frequency  
Oscillator duty cycle  
Efficiency  
260  
80  
280  
85  
KHz  
%
DCOSC  
η
85  
88  
%
Current limit  
ILIMIT  
600  
800 1000 mA  
Input current at no load  
IIN0  
VIN=1.8V VOUT=3.0V  
VIN=1.8V VOUT=5.0V  
No load, EN=“low”  
20  
25  
uA  
uA  
uA  
V
Input standby current  
EN “High” voltage level  
EN “low” level  
IINQ  
1
0.4*VOUT  
0.2  
0.1  
V
EN “high” input current  
EN “low” input current  
EXT output current  
uA  
uA  
mA  
-0.1  
-5  
5
ShenZhen CYT IC Design CO ,Ltd  
5
CYT 2606  
Typical Characteristics (Using Internal Switch Transistor)  
Start-up/Hold-on vs. Output Current  
3
2.5  
2
1.5  
1
Start-up  
Hold-on  
L=47uH  
C=47uF  
0.5  
0
1
10  
100  
1000  
Output Current(mA)  
Output Voltage vs. Output Current  
4
3.5  
3
3V  
2V  
2.5V  
1.5V  
2.5  
2
1V  
L=47uH  
C=47uF  
VOUT=3.3V  
1.5  
0
50  
100  
150  
200  
250  
300  
350  
Output Current (mA)  
ShenZhen CYT IC Design CO ,Ltd  
6
CYT 2606  
Efficiency vs. Output Current  
90  
88  
86  
84  
82  
80  
78  
76  
74  
72  
3V  
2.5V  
2V  
L=47uH  
C=47uF  
VOUT=3.3V  
1V  
1.5V  
1
10  
100  
1000  
Output Current(mA)  
Output Current vs. Ripple Voltage  
70  
60  
50  
40  
30  
20  
10  
0
3V  
2V  
2.5V  
L=47uH  
C=3*47uF  
VOUT=3.3V  
1.5V  
1V  
0
50  
100  
150  
200  
250  
300  
350  
Output Current (mA)  
ShenZhen CYT IC Design CO ,Ltd  
7
CYT 2606  
OUTLINE DRAWING SOT-89  
DIMENSIONS  
INCHES  
MM  
DIMN  
MIN  
MAX  
0.181  
0.167  
0.075  
0.059  
0.102  
0.047  
MIN  
4.400  
4.050  
1.700  
1.300  
2.400  
0.890  
MAX  
4.600  
4.250  
1.900  
1.500  
2.600  
1.200  
0.173  
0.159  
0.067  
0.051  
0.094  
0.035  
A
B
C
D
E
F
G
H
I
0.118REF  
0.059REF  
3.00REF  
1.50REF  
0.016  
0.020  
0.063  
0.016  
0.400  
0.520  
1.600  
0.410  
0.055  
0.014  
1.400  
0.350  
J
K
L
M
10°TYP  
10°TYP  
0.028REF  
0.70REF  
Outline Drawing SOT-23-5  
DIMENSIONS  
INCHES  
MM  
DIMN  
MIN  
MAX  
0.120  
0.070  
0.051  
0.020  
0.037  
0.075  
0.006  
0.008  
0.118  
MIN  
MAX  
0.110  
0.059  
0.036  
0.014  
-
2.80  
1.50  
0.90  
0.35  
-
3.05  
1.75  
1.30  
0.50  
0.95  
1.90  
0.15  
0.20  
3.00  
A
B
C
D
E
F
H
J
K
-
-
-
-
0.0035  
0.102  
0.090  
2.60  
ShenZhen CYT IC Design CO ,Ltd  
8

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