SUL6001 Low Noise High PSRR 1 Ch 500mA/1A Ultra Low Dropout LDO
FUNCTIONAL DESCRIPTION
MAIN FEATURES
The SUL6001 series is a CMOS-based positive
low-dropout linear regulator (LDO) featuring
500 mA/ 1.0A that provides high PSRR, high
output voltage accuracy, low-noise and low
supply current
⚫
⚫
⚫
It consists of a voltage reference, an error
amplifier, a resistor-ladder for output voltage
setting. It also has under-voltage lockout
(UVLO), over current/short circuit protection
circuit and over temperature shutdown circuit.
⚫
Supply Current (no load): 85μA (typ.)
Supply Current (Standby): 0.1μA (typ.)
Dropout Voltage: 95mV (DFN1216-8,
Iout=1A, Vout=3.3V, typ.)
High-PSRR: 85dB @1kHz
⚫
Output Noise: 10μVrms (10-100KHz, 0.85V
⚫
⚫
⚫
The SUL6001 typically has 95mV dropout
voltage (DFN1216-8, Iout=1A, Vout=3.3V) and
156mA dropout voltage (DFN1216-8, Iout=1A,
Vout=1.8V) and chip enable function (EN) for
long battery life.
⚫
⚫
Excellent ripple rejection, load transient and
line transient response make it ideal for the
power sources of mobile communication
devices or camera modules in low light
condition. It can also turn on under full load
condition, making it suitable for harsh system
environment.
output voltage settings, typ.)
Line Regulation: 0.01%/V
Fixed Mode Voltage Range: 0.85V to 4.3V
with 0.05V step.
Adjustable Mode Voltage Range: 0.85V to
4.6V.
Built-in Short Current Protection Limit:
120mA (LCON=’H’, 1.0A, typ.)
Bulit-in Peak Current Protection Limit:
1.7A (LCON=’H’, 1.0A, typ.)
⚫
Over Temperature Protection and Auto
⚫
⚫
Recover
Built-in Soft-Start and Inrush Current Limit
Fast Auto Discharge Function for Power
Down
APPLICATIONS
The SUL6001 series LDOs have option for
output current limit between 1.0A or 500mA by
alternating the LCON pin between “H” or “L”
⚫
⚫
⚫
Portable Device , Tablets and Smartphone
Cameras, VCRs and Car Dash Cameras
Low Light & Low Noise Cam Application
⚫
⚫
Communications and Infrastructure
AR or VR Application
for DFN1216-8 package version.
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BLOCK DIAGRAMS
DFN1216-8 (8 PIN)
VIN
VOUT
UVLO
POR
VIN
VREF
Cc
Softstart
VOUT
VFB
Transient Enhance
CE
Thremal Shutdown
VREF
GND
Current
Limiter
LCON
SOT-89-3 (3 PIN)
VIN
VOUT
UVLO
POR
VREF
Cc
Softstart
Transient Enhance
Thremal Shutdown
VREF
GND
Current
Limiter
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SOT-89-5 (5 PIN)
VIN
VOUT
UVLO
POR
VREF
Cc
Softstart
VFB
Transient Enhance
CE
Thremal Shutdown
VREF
GND
Current
Limiter
SOT-23-5 Fixed Mode (5 PIN)
VIN
VOUT
UVLO
POR
VREF
Cc
Softstart
VFB
Transient Enhance
EN
Thremal Shutdown
VREF
GND
Current
Limiter
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SOT-23-5 ADJ Mode (5 PIN)
VIN
VOUT
UVLO
POR
Cc
Softstart
VREF
VFB
Transient Enhance
EN
GND
Thremal Shutdown
VREF
Current
Limiter
It is not recommended to use the 1A version of the SOT-23-5 package.
Ordering Information
Part Number
Package
Tape/Reel
SUL6001S5-XX
SOT23-5
3000
SUL6001T5-XX
SOT89-5
1000
SUL6001D6-XX
DFN2x2-6
4000
SUL6001DRB
DFN3x3-8
5000
SUL6001D8-XX
DFN1216-8
3000
For example, 28 means product outputs 2.8V, ADJ means adjustable.
SUL6001 devices are Pb-free and RoHS compliant.
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PACKAGE INFORMATION & PIN DESCRIPTION
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*Note: Connect exposed pad (heat sink on the back) to GND.
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TYPICAL APPLICATION CIRCUIT
A. Fixed mode example
* Recommended Ceramic Capacitors for Vin and Vout: 1uF
B. Adjustable (ADJ) mode example
The adjustable-version device requires external feedback divider resistors to set the output voltage.
VOUT is set using the feedback divider resistors, R1 and R2 , according to the following equation:
VOUT = VFB × (1 + R1 / R2 )
For this device, VFB = 0.85 V.
To ignore the FB pin current error term in the VOUT equation, set the feedback divider current to
100x the FB pin current listed in the Electrical Characteristics table. This setting provides the
maximum feedback divider series resistance, as shown in the following equation:
R1 + R2 ≤ VOUT / (IFB × 100)
For this device, IFB = 10 nA.
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ABSOLUTE MAXIMUM RATINGS
RECOMMENDED OPERATING CONDITIONS
ELECTROSTATIC DISCHARGE
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THERMAL DATA
ELECTRICAL CHARACTERISTICS
VIN = VOUT + 1.0 V, IOUT = 1 mA, CIN = COUT = 1.0 μF, typical values are at TJ = 25 °C; unless otherwise
noted.
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ELECTRICAL CHARACTERISTICS (continued)
*This is SUL6001D8-33 measurement data. Other PSRR information please contact SUNTEK.
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Load Regulation (Dynamic)
Transient recovery
time Δt1
Overshoot
Voltage ΔV2
VOUT
Undershoot
Voltage ΔV1
ILOAD
Transient recovery
time Δt2
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*This table is SUL6001D8-33 measurement data. For detail load regulation information about other SUL6001
series LDOs, please contact SUNTEK.
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FUNCTION DESCRIPTION
A. Short-Circuit Protect and Current Limitation
SUL6001 series LDOs can protect internal circuit under short-circuit condition on the output. When
the load current increases above 1.55 A, the current limit and current foldback mechanism starts to
restrict the ILIM value. If the load resistance decreases even more then the foldback, circuit starts
limiting the current to 0.2 A when VOUT = 0.
B. Over Temperature Protection and Auto Recover
In order to prevent over thermal condition from damaging the device, SUL6001 series LDOs have
internal thermal limiting functions designed to protect the device. It will rapidly shut off PMOS pass
element during over temperature condition.
C. Current Foldback
The current limiting/ current foldback circuit plays an important role by controlling any excessive
output current. Our SUL6001 series LDOs provide a current foldback circuit that can detect
accurately when an over-current condition occurs.
D. Very Fast Transient Response
In addition to the main feedback loop, SUL6001 series LDOs contain a fast-transient loop that allows
the LDO to respond faster to large-output transients. SUL6001 series LDOs that contain this loop are
better able to minimize the effects of a load transient even the output capacitance is small. The
recommended output capacitance value is 1μF. It’s small size greatly reduce the cost and save PCB
area.
E. Ultra High PSRR and Extreme Low Noise
SUNTEK’s SUL6001 series high-performance LDO regulators feature remarkable power supply
rejection ratio characteristics (up to 104 dB at 10 kHz) and extreme-low noise operation (as low as
6.3 µVRMS with A-wt) resulting in cleaner and stable output voltages. Our LDO is very suitable for
ultra-sensitive loads like camera module and security monitor, especially in low light condition.
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F. Start-Up at Full Load
SUL6001 series LDOs can start-up at full load, make it very suitable for heavy load start up condition
and severe system timing constraint.
G. Auto Discharge Function
SUL6001 series LDOs have an auto discharge function to quickly force the output voltage to zero.
When the LDO is disabled, the auto discharge function quickly discharge the output capacitor,
thereby reducing the output voltage to nearly zero. This function is very useful for quickly ON/OFF
application.
H. Low Quiescent Current
SUL6001 series LDOs consume only 85μA (typical) while operating with no load condition. By
reducing the quiescent current, your application can stay in standby/sleep mode much longer than
leading low quiescent current LDOs in the market.
I. Uuder Voltage Lock OUT (UVLO)
SUL6001 has an undervoltage lockout (UVLO) function to make sure that whole circuit does nothing
until the power supply voltage is high enough. When power supply voltage is high enough,
reference circuit can generate right voltage ; logic function can generate correct control signals. This
UVLO function can guarantee robust system performance.
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TYPICAL CHARACTERISTICS
VIN = VSET(1) + 1.0 V, IOUT = 1 mA, CIN = COUT = 1.0 μF, LCON=’H’, typical values are at TJ = 25 °C; unless
otherwise noted.
Output Voltage vs. Input Voltage (CIN = COUT=1.0μF, Ta= 25 °C )
SUL6001D8-33
3.5
1
3
Output Voltage VOUT (V)
Output Voltage VOUT (V)
SUL6001D8-12
1.2
0.8
0.6
1 mA
0.4
50mA
0.2
100mA
0
0
1
2
3
4
2.5
2
50mA
1
100mA
0.5
0
5
1 mA
1.5
0
1
Input Voltage VIN (V)
2
3
4
5
Input Voltage VIN (V)
Supply Current vs. Input Voltage (CIN = COUT = 1.0μF, Ta= 25 °C )
100
100
90
90
80
80
Quiescent Current IQ (μA)
Quiescent Current IQ (μA)
SUL6001D8-12
SUL6001D8-090
70
60
50
40
30
20
10
0
0
1
2
3
4
5
Input Voltage VIN (V)
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70
60
50
40
30
20
10
0
0
1
2
3
4
5
Input Voltage VIN (V)
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SUL6001D8-18
90
90
80
80
70
60
50
40
30
20
10
0
0
1
2
SUL6001D8-33
100
Quiescent Current IQ (μA)
Quiescent Current IQ (μA)
100
3
4
5
70
60
50
40
30
20
10
0
0
1
2
3
4
5
Input Voltage VIN (V)
Input Voltage VIN (V)
Supply Current vs. Temperature (CIN = COUT = 1.0μF, IOUT= 0 mA )
SUL6001D8-12
Quiescent Current IQ (μA)
105
100
95
90
85
80
-20
0
20
40
60
80
100
120
Temperature TA (℃)
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Over Current Protect Foldback Characteristic (LCON = VIN, CIN = COUT = 1.0 μF, Ta = 25°C)
SUL6001D8-090
SUL6001D8-12
SUL6001D8-18
SUL6001D8-25
SUL6001D8-33
SUL6001D8-43
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Output Noise Voltage (10 Hz to 100 kHz, CIN = COUT = 1.0 μF, Ta = 25°C)
SUL6001D8-090, IOUT = 100 mA
Amplitude Spectral Density
VRMS from 10 Hz to 100 kHz
SUL6001D8-12, IOUT = 100 mA
Amplitude Spectral Density
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VRMS from 10 Hz to 100 kHz
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SUL6001D8-33, IOUT = 100 mA
Amplitude Spectral Density
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VRMS from 10 Hz to 100 kHz
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Power Supply Ripple Rejection vs. Frequency (VIN=VOUT+1V , CIN = COUT = 1.0 μF, Ripple
= 0.2 Vp-p, Ta = 25°C)
SUL6001D8-090
ILoad=1mA
I Load=10mA
ILoad=30mA
I Load=150mA
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SUL6001D8-12
ILoad=1mA
I Load=10mA
ILoad=30mA
I Load=150mA
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SUL6001D8-18
ILoad=1mA
I Load=10mA
ILoad=30mA
I Load=150mA
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SUL6001D8-25
ILoad=1mA
I Load=10mA
ILoad=30mA
I Load=150mA
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SUL6001D8-33
ILoad=1mA
I Load=10mA
ILoad=30mA
I Load=150mA
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SUL6001D8-43
ILoad=1mA
I Load=10mA
ILoad=30mA
I Load=150mA
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Load Transient Response (VIN=VOUT+1V, CIN = COUT = 1.0 μF, tr = tf = 1 μs, Ta = 25°C)
SUL6001D8-090
1mA -> 250mA
1mA -> 1000mA
1mA -> 500mA
0mA -> 300mA
0mA -> 1000mA
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SUL6001D8-12
1mA -> 250mA
1mA -> 1000mA
1mA -> 500mA
0mA -> 300mA
0mA -> 1000mA
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SUL6001D8-18
1mA -> 250mA
1mA -> 1000mA
1mA -> 500mA
0mA -> 300mA
0mA -> 1000mA
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SUL6001D8-25
1mA -> 250mA
1mA -> 500mA
1mA -> 1000mA
0mA -> 300mA
0mA -> 1000mA
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SUL6001D8-33
1mA -> 250mA
1mA -> 1000mA
1mA -> 500mA
0mA -> 300mA
0mA -> 1000mA
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SUL6001D8-43
1mA -> 250mA
1mA -> 1000mA
1mA -> 500mA
0mA -> 300mA
0mA -> 1000mA
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Turn-on waveform by VIN & CE @ light load (VIN = CE = 0 V to VOUT+1V, CIN
= COUT = 1.0 μF, Ta = 25°C, IOUT = 1 mA)
SUL6001D8-090
SUL6001D8-12
SUL6001D8-18
SUL6001D8-25
SUL6001D8-43
SUL6001D8-33
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Turn-on waveform by VIN & CE @ full load (VIN = CE = 0 V to VOUT+1V, CIN
= COUT = 1.0 μF, Ta = 25°C, IOUT=1A)
SUL6001D8-090
SUL6001D8-12
SUL6001D8-25
SUL6001D8-18
SUL6001D8-43
SUL6001D8-33
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Turn-on by CE pin & Inrush current @ no load (VIN = VOUT+1V, CE = 0V to 1V, CIN =
COUT = 1.0 μF, Ta = 25°C, IOUT=0 mA)
SUL6001D8-12
SUL6001D8-09
SUL6001D8-18
SUL6001D8-25
SUL6001D8-33
SUL6001D8-43
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�
SUNTEK
Turn-on by CE pin @ full load (VIN = VOUT+1V , CE = 0V to 1V, CIN = COUT = 1.0 μF, Ta =
25°C, IOUT=1A)
SUL6001D8-090
SUL6001D8-18
SUL6001D8-33
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SUL6001D8-12
SUL6001D8-25
SUL6001D8-43
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DFN1216-8 Package Information
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SOT-23-5 Package Information
NOTES:
1.
2.
3.
4.
All dimensions refer to standard.
Dimensions D does not include mold FLASH.
Dimensions E1 does not include mold FLASH.
FLASH or protrusion shall not exceed 0.25mm per side.
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SOT-89-5 Package Information
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DFN2020-6 Package Information
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DFN3030-8 Package Information
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