ETC1 ML65A30MB Ml65 series dc-dc converter Datasheet

ML65
ML65 Series DC-DC Converter
Application
Features
Power Source of Portable Products
Palmtops
Portable Cameras and Video Recorders
Wireless mouse and keyboard
Ordering Information
Designator
a
b
c
d
ML65
Version
ML65A
ML65B
ML65C
ML65D
ML65E
ML65F
Description
Version
Output Voltage
eg. 30=3.0V
General Description
The ML65 is a group of PWM Step-up DC/DC
converter IC with ultra-low supply current by
CMOS process.
33=3.3V
50=5.0V
Package Type
P = SOT-89
M = SOT-23
T = TO-92
Device Orientation
R = Embossed Tape
(Orientation of Device : Right)
L = Embossed Tape
(Orientation of Device : Left)
B = Bag (TO-92)
Package
Designator
M
P
T
M
P
T
M
P
M
P
M
P
M
P
Package
SOT23-3
SOT89-3
TO-92
SOT23-3
SOT89-3
TO-92
SOT23-5
SOT89-5
SOT23-5
SOT89-5
SOT23-5
SOT89-5
SOT23-5
SOT89-5
Small number of external components: inductor, diode and
capacitor.
Ultra low input current : Typical 6uA
Output Voltage Accuracy : +/- 2.5 %
Low ripple and noise
Low startup voltage : Max 0.9V (with 1mA input)
High Efficiency: Typical 80%
PackageAvailable:
SOT- 89 (500mW), SOT-23 (150mW) & TO - 92
(300mW)
It consists of an oscillator, a PWM control circuit, a
Lx switch driver transistor, a reference voltage unit,
an error amplifier for voltage detection and an Lx
switch protection circuit. It is suitable for use with
battery-powered instruments with low noise and
ultra low supply current.
Switching
Transistor
CE
Function
VDD Pin
FB Pin
Features
Build-in
Transistor
No
No
No
Lx
External
Transistor
No
No
No
Ext
Yes
No
No
Lx+CE
Yes
No
No
Ext+CE
No
Yes
No
Lx+VDD
No
Yes
Yes
FB
Build-in
Transistor
External
Transistor
Build-in
Transistor
Build-in
Transistor
P1/10
Rev. B, July 2005
ML65
ML65A
Pin Configuration
Package Pin Number
SOT23-3
SOT89-3
TO-92
1
1
1
3
2
2
2
3
3
Pin Name
Function
VSS
VOUT
LX
Ground
Output Voltage monitor, Internal IC Power Supply
Switch
Block Diagram
Typical Applications
P2/10
Rev. B, July 2005
ML65
ML65B
Pin Configuration
Package Pin Number
SOT23-3
SOT89-3
TO-92
1
1
1
3
2
2
2
3
3
Pin Name
Function
VSS
VOUT
EXT
Ground
Output Voltage monitor, Internal IC Power Supply
External Switch Transistor Drive
Block Diagram
Typical Applications
P3/10
Rev. B, July 2005
ML65
ML65C
Pin Configuration
Package Pin Number
SOT23-5
SOT89-5
4
5
2
2
5
4
1
3
3
1
Pin Name
Function
VSS
VOUT
Lx
CE
NC
Ground
Output Voltage monitor, Internal IC Power Supply
Switch
Chip Enable
NC
Block Diagram
Typical Applications
P4/10
Rev. B, July 2005
ML65
ML65D
Pin Configuration
Package Pin Number
SOT23-5
SOT89-5
4
5
2
2
5
4
1
3
3
1
Pin Name
Function
VSS
VOUT
EXT
CE
NC
Ground
Output Voltage monitor, Internal IC Power Supply
External Switch Transistor Drive
Chip Enable
NC
Block Diagram
Typical Applications
P5/10
Rev. B, July 2005
ML65
ML65E
Pin Configuration
Package Pin Number
SOT23-5
SOT89-5
4
5
2
2
5
4
1
3
3
1
Pin Name
Function
VSS
VDD
Lx
VOUT
NC
Ground
Power Supply
Switch
Output Voltage Monitor
NC
Block Diagram
Typical Applications
P6/10
Rev. B, July 2005
ML65
ML65F
Pin Configuration
Package Pin Number
SOT23-5
SOT89-5
4
5
2
2
5
4
1
3
3
1
Pin Name
Function
VSS
VOUT
Lx
FB
NC
Ground
Power Supply
Switch
Feedback
NC
Block Diagram
Typical Applications
P7/10
Rev. B, July 2005
ML65
Absolute Maximum Ratings
Parameter
Input Voltage
VDD Input Voltage
Lx Pin Voltage
EXT Pin Voltage
CE Pin Voltage
Lx Pin Current
EXT Pin Current
SOT-89
Continuous
TO-92
Total Power
Dissipation
SOT-23
Operating Ambient
Temperature
Storage Temperature
Symbol
VIN
VDD
VLX
VEXT
VCE
ILX
IEXT
Ratings
10
10
10
-0.3 ~ VOUT + 0.3
-0.3 ~ VOUT + 0.3
600
+ 30
500
Units
V
V
V
V
V
mA
mA
Pd
300
mW
150
Topr
Tstg
-25 ~ +85
o
C
-40 ~ +125
o
C
Electrical Characteristics
VIN = VOUT * 0.6, VSS = 0V, IOUT = 10mA, Ta = 25 oC, unless otherwise specified.
Parameter
Symbol
Output Voltage
VOUT
Input Voltage
Startup Voltage
Hold-on Voltage
VIN
VSTART
VHOLD
Supply Current 1
IDD1
Supply Current 2
Lx Switching Current
Lx Leakage Current
IDD2
ILX
ILXLEAK
EXT “High” On Current
IEXTH
EXT “Low” On Current
IEXTL
CE “High” Voltage
CE “Low” Voltage
CE “High” Current
CE “Low” Current
Oscillator Frequency
Duty Cycle
Efficiency
Slow-Start Time
VCEH
VCEL
ICEH
ICEL
FOSC
MAXDTY
EFF
TSS
Conditions
IOUT = 1mA, VIN: 0→2V
IOUT = 1mA, VIN: 2→0V
No external component,
VIN = VOUT * 0.95
VIN = VIN + 0.5V
VLX = 0.4V, VIN = VOUT * 0.95
VIN =VLX=6.0V
No external component,
VIN = VOUT * 0.95,
VEXT = VOUT – 0.4V
No external component,
VIN = VOUT * 0.95,
VEXT = 0.4V
VIN = VOUT * 0.95
VIN = VOUT * 0.95
VOUT = 6.0V, VCE = 6.0V
VOUT = 6.0V, VCE = 0.0V
Min Typ Max Units
Vout *
Vout *
Vout
V
0.975
1.025
8
V
0.8
0.9
V
0.7
V
30~70
uA
11~26
250
uA
mA
uA
0.5
-5.5
mA
13
mA
0.7
0.2
0.25
-0.25
80
5
100
87
85
15
92
25
V
V
uA
uA
KHz
%
%
ms
Note : 1. Schokkty diode: 1N5817 or 1N5819 (forward voltage drop : 0.2V)
2. Inductor : 47uH (ESR < 0.5Ω)
3. Capacitor : Tantalum type, 47 uF
P8/10
Rev. B, July 2005
ML65
Electrical Characteristics
VIN = 1.8V, IOUT = 10mA, Ta = 25 oC, unless otherwise provided.
Symbol
Conditions
Min Typ Max
VOUT
2.925 3.000 3.075
VIN
8
VSTART
IOUT = 1mA
0.8
0.9
VHOLD
IOUT = 1mA
0.7
IDD1
VIN = 2.85V
30
IDD2
VIN = 3.05V
11
ILX
VLX=0.4V, VIN=2.85V
250
ILXLEAK
VIN=6.0V, VLX=6.0V
0.5
FOSC
100
150
MAXDTY
80
87
92
EFF
85
TSS
5
15
25
Units
V
V
V
V
uA
uA
mA
uA
KHz
%
%
ms
ML65A33
VOUT = 3.3V VIN = 2.0V, IOUT = 10mA, Ta = 25 oC, unless otherwise provided.
Parameter
Symbol
Conditions
Min Typ Max
Output Voltage
VOUT
3.218 3.300 3.383
Input Voltage
VIN
8
Startup Voltage
VSTART
IOUT = 1mA
0.8
0.9
Hold-on Voltage
VHOLD
IOUT = 1mA
0.7
Supply Current 1
IDD1
VIN = 3.135V
33
Supply Current 2
IDD2
VIN = 3.35V
12
Lx Switching Current
ILX
VLX=0.4V, VIN=3.135V
260
Lx Leakage Current
ILXLEAK
VIN=6.0V, VLX=6.0V
0.5
Oscillator Frequency
FOSC
100
150
Oscillator Duty Cycle
MAXDTY
80
87
92
Efficiency
EFF
85
Slow –Start Time
TSS
5
15
25
Units
V
V
V
V
uA
uA
mA
uA
KHz
%
%
ms
ML65A50
VOUT = 5.0V VIN = 3.0V, IOUT = 10mA, Ta = 25 oC, unless otherwise provided.
Parameter
Symbol
Conditions
Min
Output Voltage
VOUT
4.875
Input Voltage
VIN
Startup Voltage
VSTART
IOUT = 1mA
Hold-on Voltage
VHOLD
IOUT = 1mA
0.7
Supply Current 1
IDD1
VIN = 4.75V
Supply Current 2
IDD2
VIN = 5.05V
Lx Switching Current
ILX
VLX=0.4V, VIN= 4.75V
Lx Leakage Current
ILXLEAK
VIN=6.0V, VLX=6.0V
Oscillator Frequency
FOSC
Oscillator Duty Cycle
MAXDTY
80
Efficiency
EFF
Slow –Start Time
TSS
5
Units
V
V
V
V
uA
uA
mA
uA
KHz
%
%
ms
ML65A30
VOUT = 3.0V
Parameter
Output Voltage
Input Voltage
Startup Voltage
Hold-on Voltage
Supply Current 1
Supply Current 2
Lx Switching Current
Lx Leakage Current
Oscillator Frequency
Oscillator Duty Cycle
Efficiency
Slow –Start Time
P9/10
Typ Max
5.000 5.125
8
0.8
0.9
70
26
290
100
87
85
15
0.5
150
92
25
Rev. B, July 2005
ML65
Application Notes
1. It is recommended to use capacitor with a capacity of 10uF or more for good frequency characteristics, otherwise it will lead
to high output ripple. Tantalum type capacitor is recommended. As there may be the case where a spike-shaped high voltage
is generated by the inductor when Lx transistor is turned off, the operating voltage of capacitor should be at least three times
of the output set voltage so as to avoid over-voltage damage.
2. It is recommended to use inductor has sufficiently small d.c. resistance, large allowable current and hardly reaches magnetic
saturation. When the inductance of inductor is small, there may be the case that the inductor current exceeds the absolute
maximum ratings at the maximum load condition.
3. It is recommended to place external components as close as possible to the DC/DC converter so as to minimize the
interconnection parasitic between components and DC/DC converter, especially for the capacitor connected to VOUT pin. It
is recommended to place 0.1uF ceramic capacitor between VOUT pin and VSS pin.
4. It is recommended to provide sufficient grounding for VSS pin. This will help to stable the zero level within DC/DC
converter induced by the switching current level variation during operation. And the insufficient grounding may result in
unstable operation of DC/DC converter.
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. No liability will be accepted by the publisher for any consequence of its use.
P10/10
Rev. B, July 2005
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