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| Step-Up DC-DC Converter and Controller | ||||||
| Step-Up DC-DC Converter | ||||||
| Part No. | Features | VIN(Range)(V) | η(％) | IO(mA) | IQ(uA) | Package |
| UC3506* | 1V High Efficiency Synchronous Step-Up Converters | 0.6V~5.5V | Up to 92% | 1000mA | 18uA | TSSOP-8 |
| UC8383-XX |
165KHz VFM Step-Up DC-DC Converters * 0.8V Start-Up Voltage * Output Voltage Accuracy ±2% * Low Ripple and Low Noise * High Efficiency Up to 85% * Low Profile and Minimum External Components |
0.8V ~ 5.5V | Up to 85% | Up to 100mA | 18uA | SOT-89 |
| UC3383-XX |
PFM Controlled,Step-Up DC-DC Converters with Enable Function * Highly Accurate: Set-up Voltage ±2.5% * Variable Duty Ratio: 45%/75% (±5%) * Both Switching Transistor Built-in and External Types are vailable |
0.9V ~ 10.0V | Up to 85% | Up to 50mA | 5.3uA | SOT-25 SOT-89 |
| UC3382-XX* | PWM/PFM Controlled,Step-Up DC-DC Converters and controller | 0.9V~10.0V | 85%(Typ) | Up to 100mA | 5uA | SOT-25 SOT-89 SOT-89-5 |
| UC3553-XX* |
High Efficiency Synchronous Step-Up DC-DC Converters (Vout=1.8V~5.5V) |
1.1V~5.5V | Up to 92% | Up to 300mA | 20uA | MSOP-8 |
| LT1304 | MICROPOWER DC/DC CONVERTERS WITH LOW-BATTERY DETECTOR ACTIVE IN SHUTDOWN | 1.5V~6.5V | - | - | - | DIP-8 SOP-8 |
| UC2306-XX |
DC-DC Converters with Low-Battery Detector Active in Shutdown *In shutdown mode:10μA quiescent current. *Low battery detector active *Only by one resistor: peak current is programmable. |
1.5V ~ 8.0V | Up to 85% | 1000mA | 120uA | SOP-8 DIP-8 |
| UC3555 |
500mA PFM Synchronous Step-Up DC-DC Converters and Controller * Low power PFM step-up DC/DC * internal synchronous rectifier * Low battery detection * Current limited protection * Current Anti-Drawback protection |
1.6V~4.5V | 95%(Typ) | Up to 500mA | 80uA | TSSOP-8 |
| UC3551-XX |
450KHz ADVANCED PWM STEP-UP DC-DC CONVERTER * Low Start-up Input Voltage is as Low as 1.0V * Efficiency up to 90% * Zero Shutdown Mode Supply Current * Both Internal and External Power Switches for Maximum Flexibility |
2.0V~6.5V | Up to 90% | Up to 300mA | 17uA | SOT-26 |
| UC3500-XX |
150KHz Max VFM Step-Up DC-DC Converters (VO=2.5V~5V) * 0.8V start-up voltage * 0.5V hold-on voltage * Low supply current of 18μA * High efficiency up to 88% * Low profile and minimum external components |
0.7V~7.0V | 88%(Typ) | Up to 150mA | 18uA | SOT-25 SOT-23 SOT-89 |
| P2172 |
100kHz, 1.25A High Efficiency Switching Regulators * Very Few External Parts Required * Self-Protected Against Overloads * Operates in Nearly All Switching Topologies * Flyback-Regulated Mode Has Fully Floating Outputs * Can Be Externally Synchronized |
3.0V~60.0V | 80%(Typ) | 1.25A | 6mA | DIP-8 |
| UU28121 |
1.2MHz, 1.2A BOOST FOR WHITE LED DRIVER * Internal Soft-start Function * Current limit and Thermal shutdown protection * Under voltage Lockout |
2.5V~5.5V | - | 1.2A | 250uA | SOT-25 |
| UU28141 |
1MHz, 1.4A BOOST FOR WHITE LED DRIVER * Drives up to 8 series White LEDs * Wide range for PWM dimming (200Hz~200KHz) * Over Voltage Protection (OVP) * Internal Soft-start Function * Current limit and Thermal shutdown protection * Under voltage Lockout |
2.5V~5.5V | - | 1.4A | 400uA | SOT-26 |
DC-DC Converter(Step-Down /Step-Up)
Part No.
Features
VIN(Range)(V)
η(％)
IO(mA)
IQ(uA)
Package
UC3380
PWM/PFM Step -Up Switching Regulator Controller(VO=1.8V~5.0V)
* 0.5uA Low Shutdown Current
* Fix Frequency PWM at 300KHZ
* Built in PWM Switching Control Circuit ,Duty Ratio is 0~78%
* Soft Start Time: 3ms
* Shutdown Function
0.9V~10.0V
86%
80mA
0.5uA
SOT-25
UC3550
300KHz PWM Step-Up DC-DC Controller(VO=3.3V~5.0V)
* Output Voltage Range：1.8~6V Programmable in 0.1V with high accuracy ± 2.5%
* High Efficiency 88% (Typ.)
* Low Start-up Voltage of 0.9V Typical at IOUT = 1.0mA
* Chip Enable Pin with Pull-up Current Source
0.9V~8.0V
88%
150mA
<200uA
SOT-25
UC3552
PWM DC-DC CONVERTER WITH INTERNAL SWITCH AND SOFT-START
* 1.6A, 0.23Ω, internal switch
* High efficiency: 90%
* Adjustable frequency: 640kHz or 1.3MHz
* Low shutdown current: 0.1μA
* Programmable soft-start
2.6V~5.5V
90%
1600mA
1200uA
MSOP-8 SOP-8
UC33063A
DC TO DC CONVERTER CONTROLLER
* Short Circuit Current Limiting.
* Low Standby Current.
* Frequency of Operation from 100Hz to 100kHz.
* Step-up, Step-down or Inverting Switch Regulators.
3.0V~40V
-
1500mA
-
DIP-8 SOP-8
UC34163
DC TO DC CONVERTER CONTROLLER
* Low standby current.
* Frequency of operation from 100Hz ~ 100kHz.
* Step-down switch regulators.
35V
-
1500mA
-
DIP-8 SOP-8
UD06121
* Input Voltage Range :2.5V~5.5V
* Output Voltage: from 0.6V to VIN
* High Efficiency: Up to 92%
* Constant Frequency Operation:1.4MHz
* Output Current:1.2A
* Quiescent Current: 200μA (input < 4.2V)
* No Schottky Diode Required
* 100% Duty Cycle in Dropout
* 0.6V Reference Allows Low Output Voltages
* Current Mode Operation for Excellent Line and Load Transient
Response
* Current limit, Enable function
* Short Circuit Protect (SCP)
* ≤1μA Shutdown Current
2.5V~5.5V
92%
1600mA
400uA
SOT-25
UD06122
1.2A 1.5MHz dual high-efficiency(PWM) step-down DC-DC converter
* Stable with Low ESR Output Ceramic Capacitors
* Up to 95% Efficiency
* Less than 1μA Shutdown Current
* Thermal Shutdown Protection
* Current limit and short circuit protections.
* Build-in soft start function
2.5V~6.0V
95%
1200mA
350uA
DFN3030-10
UD05123
1.2A 2.25MHz constant frequency current mode PWM step-down converter
* High Efficiency: Up to 92%
* 100% Duty Cycle in Dropout
* Current limit, Enable function
* Short Circuit Protect (SCP)
* ≤1μA Shutdown Current
2.5V~5.5V
92%
1200mA
90uA
SOT-25
Part No.
Features
VIN(Range)(V)
η(％)
ICC
ISW(A)
Package
PD(mW)
MC3063
* MAX. 40V Input
* MAX. load to 1.5A
* Output Voltage Adjustable
* Frequency Operation of 150kHz
* Precision 1.5% Reference
0V~40.0V
-
7.0mA
1.5A
SOP-8
-
3563
High-Efficiency DC-DC Converter
* Bootstrapped driver.
* High side current sense capability.
* High efficiency (up to 90%)
* Internal ±2% reference.
* Frequency operation from 100Hz to 100KHz
3.0V~30.0V
90%
1.6mA
1.5A
DIP-8 SOP-8
1000/625mW
MC34063A
Variable Frequency DC-DC Converter Controller IC
for Step-Up or Step-Down Voltage Converter
* Short circuit current limiting.
* Low standby current.
* Frequency of operation from 100Hz to 100kHz.
* Step-up, step-down or inverting switch regulators.
3.0V~40.0V
88%
2.7mA
1.5A
DIP-8 SOP-8 TSSOP-8
1250/625mW/300mW
MC33167*
5A DC-DC Converter with Standby Mode
Step-Up or Step-Down or Inverse
7.5V~40.0V
80%
40mA Op
36uA stby
5.0A
TO-252-5 TO-263-5 TO-220-5
