UTC L5200-AD-SM1-R Low noise, regulated charge pump dc/dc converter Datasheet

UNISONIC TECHNOLOGIES CO., LTD
L5200
CMOS IC
LOW NOISE, REGULATED
CHARGE PUMP DC/DC
CONVERTERS
MSOP-8
6
5
4
DESCRIPTION
The UTC L5200-xx series are low noise, constant frequency
charge pump DC/DC converters and designed to increase efficiency
in white LED application. The operating voltage range is 2.7V ~ VOUT
input with up to 100mA of output current. Low external parts counts
(one flying capacitor and two small bypass capacitors at VIN and
VOUT) make the UTC L5200-xx series ideally suited for small,
battery-powered applications.
A charge-pump architecture maintains constant switching
frequency to zero load and reduces both output and input ripple. The
UTC L5200-xx series have thermal shutdown capability to escape
the device damaged from a continuous short-circuit. With built-in
soft-start circuitry to prevents excessive current flow at VIN during
start-up. High switching frequency enables the use of small ceramic
capacitors. A low-current shutdown feature disconnects the load from
VIN and reduces quiescent current to <1µA.
The L5200-ADJ is available in MSOP-8 package and
L5200-fixed in SOT-26 and TSOT-26 package.
1
6
5
2
3
SOT-26
4
1 2
3
TSOT-26
*Pb-free plating product number: L5200L
FEATURES
* Low Noise Constant Frequency Operation
* Output Current: 100mA
* 2MHz Switching Frequency
* 4.5V/5.0V Fixed Output Voltage
* VIN Range: 2.7V ~ VOUT
* Automatic Soft-Start.
* No Inductors
* Less than 1µA of Shutdown Current
ORDERING INFORMATION
Ordering Number
Normal
Lead Free Plating
L5200-AD-SM1-R
L5200L-AD-SM1-R
L5200-AD-SM1-T
L5200L-AD-SM1-T
L5200-xx-AG6-R
L5200L-xx-AG6-R
L5200-xx-AH6-R
L5200L-xx-AH6-R
Note: xx :output voltage
Package
Packing
MSOP-8
MSOP-8
SOT-26
TSOT-26
Tape Reel
Tube
Tape Reel
Tape Reel
L5200L-AD-SM1-R
(1)Packing Type
(2)Package Type
(3)Output Voltage
(4)Lead Plating
www.unisonic.com.tw
Copyright © 2005 Unisonic Technologies Co., Ltd
(1) R: Tape Reel, T: Tube
(2) SM1: MSOP-8, AG6: SOT-26, AH6: TSOT-26
(3) AD: ADJ, xx: 45:4.5V, 50:5.0V
(4) L: Lead Free Plating, Blank: Pb/Sn
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QW-R502-029,D
L5200
CMOS IC
MARKING (For SOT-26/TSOT-26)
6
5
4
Lead Plating
LE
Voltage Code
1
2
3
PIN CONFIGURATIONS
SOT-26/TSOT-26
MSOP-8
C+ 1
VIN 2
C- 3
UTC
L5200-ADJ
PGND 4
8 VOUT
7 FB
6 SHDN
5 SGND
VOUT
1
GND
2
SHDN 3
UTC
L5200-XX
(Fixed)
6
C+
5
V IN
4
C-
PIN DESCRIPTION
L5200-ADJ
MSOP-8
1
PIN NO.
L5200-xx
SOT-26/TSOT-26
6
PIN
NAME
C+
2
5
VIN
3
4
C¯
4, 5
2
GND
FUNCTION
Flying Capacitor Positive Terminal
Input Supply Voltage, should be bypassed with a 1µF~4.7µf low ESR
ceramic capacitor.
Flying Capacitor Negative Terminal
Ground terminal, should be tied to a ground plane for best
performance
Shutdown Mode, Active-Low Input. A low on SHDN disables the
L5200 series. SHDN must not be allowed to float.
Feedback Input Pin for Adjustable output. An output divider should be
7
X
FB
connected from VOUT to FB to program the output voltage.
Regulated Output Voltage, should be bypassed with a 1µF~4.7µF low
8
1
VOUT ESR ceramic capacitor as close as possible to the pin for best
performance
X : The pin is Inexistent for SOT-26 and TSOT-26 package.
6
3
SHDN
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QW-R502-029,D
L5200
CMOS IC
BLOCK DIAGRAM
UTC L5200 Adjustable version (MSOP-8)
SWITCH
CONTROL
SOFT - START
SHDN
FB
-
ERROR
AMPLIFIER
+
OSCILLATOR
1.268V
VOUT
CHARGE
PUMP
+
C
VIN
C
SGND
PGND
UTC L5200 fixed version (SOT-26/TSOT-26)
SWITCH
CONTROL
SOFT - START
SHDN
VOUT
OSCILLATOR
_
ERROR
AMPLIFIER
+
1. 268V
CHARGE
PUMP
C+
V IN
C
_
GND
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QW-R502-029,D
L5200
CMOS IC
ABSOLUTE MAXIMUM RATINGS
PARAMETER
SYMBOL
RATINGS
UNIT
Input Voltage(to GND)
VIN
-0.3 ~ 6
V
Charge Pump Voltage(to GND)
VOUT
-0.3 ~ 5.5
V
V SHDN
-0.3 ~ (VIN+0.3)
Shutdown Voltage(to GND)
V
Maximum DC Output Current (Note 1)
IOUT
150
mA
VOUT Short-Circuit Duration
Indefinite
Operating Temperature
TOPR
-20 ~ +85
℃
Storage Temperature
TSTG
-40 ~ +150
℃
Note 1: Based on long-term current density limitations.
2: Stressed above Absolute Maximum Ratings may impair life or cause permanent damage to the device.
3. The device is guaranteed to meet performance specification within 0℃~+70℃ operating temperature range
and assured by design from -20℃~+85℃, characteristic and correlation with static process control.
ELECTRICAL CHARACTERISTICS
(Ta =25℃, VIN =3.6V, CFLY=1µF, CIN=1µF, COUT=1µF, unless otherwise specified.)
PARAMETER
Input Supply Voltage Range
Output Voltage
SYMBOL
VIN
L5200-4.5V
L5200-5.0V
Shutdown Input Threshold
Feedback Voltage (For L5200-ADJ)
Output Ripple Voltage(For L5200-fixed)
Operating Supply Current
Shutdown Current
VOUT
VIH
VIL
VFB
VR
ICC
I SHDN
Feedback Input Current (For L5200-ADJ)
IIH
IIL
IFB
Open-Loop Output Resistance
ROL
Switching Frequency
Efficiency (For UTC L5200-fixed)
FOSC
η
Shutdown Input Current
TEST CONDITIONS
*
IOUT≤100mA
VIN=3V, IOUT=100mA
IOUT=0mA, SHDN =VIN
SHDN =0V, VOUT=0V
SHDN =VIN
SHDN =0V
VFB=1.4V
VIN=3V, IOUT=100mA
VFB=0V
(ROL ≡ (2VIN – VOUT)/IOUT)
*
*
*
*
*
*
*
*
*
MIN
2.7
4.41
4.9
1.3
TYP
1.217
1.268
30
3.5
-1
-1
-50
1
VIN=3V, IOUT=50mA
VIN=3V, IOUT=0mA
Soft Start Time
tON
10%~90%
Note: * stand for specifications which apply over the designed operating temperature range.
UNISONIC TECHNOLOGIES CO., LTD
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4.5
5
MAX
VOUT
4.59
5.1
0.4
1.319
8
1
1
1
50
UNIT
V
V
V
V
V
V
mVP-P
mA
µA
µA
µA
nA
9.2
Ω
2
80
MHz
%
0.8
ms
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QW-R502-029,D
L5200
CMOS IC
TYPICAL APPLICATION CIRCUIT
Regulated 5V Output from a 2.7V ~ VOUT Input
Output Ripple Voltage vs Load Current
40
V IN = 3V
C FLY = 1μF
Ta = 25 ℃
4
_
6
C+
VIN
V OUT
C
VIN
2 .7 V ~ VOUT
1μF
5
2
3
OFF ON
1
_ 2%
VOUT = 5 V +
,
IOUT UP ~ 40 mA VIN ≥ 2 .7V
,
I OUT UP ~ 100 mA V IN ≥ 3 .1 V
1 μF
GND
OUTPUT RIP PLE (mVP -P )
1μF
SHDN
30
C OUT = 1μF
20
C OUT = 2.2μF
10
UTC L5200-5.0V
0
0
25
50
75
100
OUTPUT CURRENT (mA )
White or Blue LED Driver with LED Current Control ( UTC L5200-ADJ)
1μF
1
2
3V ~ 4.4V
Li - Ion
BATTERY
3
C-
+
C
VIN
V OUT
UP TO 6 LEDS
8
1μF
FB
ON OFF
6
SGND
SHDN
PGND
1μF
7
5
82Ω
4
( APPLY PWM WAVEFORM FOR
VSHDN
ADJUSTABLE BRIGHTNESS CONTROL )
82Ω
82Ω
82Ω
82Ω
82Ω
t
USB Port to Regulated 5V Power Supply ( UTC L5200-5.0V)
1μF
5
3
USB Port
1μF
4
6
1
UTC
L5200-5.0V
VOUT
1μF 5V±2%
50mA
2
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QW-R502-029,D
L5200
CMOS IC
TYPICAL CHARACTERISTICS (L5200-5.0V)
Output Voltage vs Supply Voltage
5.15
CIN = COUT = CFLY = 1μF
IOUT = 20mA
5.10
Ta = 25℃
5.00
CIN = COUT = CFLY = 1μF
Ta = 25℃
5.1
Ta = 85℃
5.05
Output Voltage (V)
Output Voltage (V)
Output Voltage vs Load Current
5.2
Ta = -40℃
4.95
5.0
VIN = 3.2V
VIN = 2.7V
VIN = 3V
4.9
4.90
4.85
2.7
3.0
3.3
3.6
3.9
Supply Voltage (V)
4.2
4.8
4.5
No Load Supply Current vs Supply Voltage
100
150
Load Current (mA)
200
Oscillator Frequency vs Supply Voltage
CIN = COUT = CFLY = 1μF
VSHDN = V IN
2.8
Ta = 25℃
5
50
3.0
Oscillator Frequency (MHz)
Supply Current (mA)
6
0
Ta = 85℃
4
Ta = -40℃
2.6
Ta = 25℃
2.4
2.2
Ta = -40℃
2.0
Ta = 85℃
1.8
1.6
1.4
1.2
3
2.7
3.0
3.3
3.6
3.9
Supply Voltage (V)
4.2
1.0
4.5
2.7
VSHDN Threshold Voltage vs Supply Voltage
3.9
4.2
4.5
CIN = COUT = CFLY = 1μF
Ta = 25℃
VIN = 2.7V
90
1.0
80
Ta = -40℃
Ta = 25℃
0.8
Ta = 85℃
Efficiency (%)
Threshold Voltage (V)
3.6
Efficiency vs Load Current
100
0.7
3.3
Supply Voltage (V)
1.1
0.9
3.0
VIN = 3.2V
70
VIN = 3.7V
60
VIN = 4.5V
50
0.6
40
0.5
2.7
3.0
3.3
3.6
3.9
Supply Voltage (V)
4.2
4.5
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30
1
10
Load Current (mA)
100
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QW-R502-029,D
L5200
CMOS IC
TYPICAL CHARACTERISTICS (L5200-5.0V) (cont.)
Short Circuit Current vs Supply Voltage
Output Current (mA)
250
CFLY = 1μF
Ta = 25℃
VOUT = 0V
VOUT Soft-Start Ramp
VSHDN
2V/DIV
200
VOUT
1V/DIV
150
100
2.7
3.0
3.3
3.6
3.9
4.2
VIN = 3V
4.5
200μs/DIV
Supply Voltage (V)
Output Ripple
VOUT (AC
COUPLED)
20mV/DIV
Load Transient Response
IL
10mA ~ 90mA
50mA/DIV
COUT = 1μF
COUT = 3.3μF
COUT = 10μF
VOUT
(AC COUPLED)
50mV/DIV
VIN = 3.3V
IL = 100mA
200ns/DIV
VIN = 3.3V
COUT = 1μF
10μs/DIV
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.
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www.unisonic.com.tw
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QW-R502-029,D
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