IK1509-xx 3.3V, 12V, adjustable output versions Adjustable versio

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IK1509-xx 3.3V, 12V, adjustable output versions Adjustable versio

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TECHNICAL DATA Switching Voltage Regulators
IK1509-xx
3.3V, 12V, adjustable output versions Adjustable version output voltage range, 1.23V over line load conditions Guaranteed output load current Input voltage range Built-in Switching Transistor chip Excellent line load regulation specifications 150kHz fixed frequency internal oscillator shutdown capability power standby mode, typically 80uA Thermal shutdown current limit protection Bare chip available
SOP-8
IK1509 -40° 125° packages
Applications
Simple high-efficiency step-down regulator On-card switching regulators Positive negative converter
Description
IK1509 series regulators monolithic integrated circuits that provide active functions step-down switching regulator, capable driving load with excellent line load regulation. These devices available fixed output voltages 3.3V, 15V, adjustable output version. Requiring minimum number external components, these regulators simple use. IK1509 series operates switching frequency 150kHz. Other features include guaranteed tolerance output voltage under specified input voltage output load conditions, oscillator frequency. External shutdown included, featuring typically 80uA standby current. Self protection features include stage frequency reducing current limit output switch over temperature shutdown complete protection under fault conditions. over temperature shutdown level about 145°C with hysteresis.
IK1509-xx
Absolute Maximum Rating
25oC)
Characteristic Maximum Input Supply Voltage ON/OFF Input Voltage Feedback Voltage Output Voltage Ground Power Dissipation Storage Temperature Range Operating Temperature Range Maximum Junction Temperature Susceptibility (Human Body Model) Operating Supply Voltage
Symbol VOUT Tstg TJMAX VESD
Value -0.3 -0.3 Internally limited +150 +125
Unit
Typical Aplication (Fixed Output Voltage Versions)
IK1509-xx
Assignments
Descriptions
Block Diagram
IK1509-xx
Electrical Characteristics
Unless otherwise specified, 3.3V, Adjustable version version. ILOAD 500mA. Characteristic Output Voltage Symbol VOUT Test Condition IK1509-3.3 IK1509-5 IK1509-12 Efficiency IK1509-3.3 4.75V 22V, 0.2A ILOAD 22V, 0.2A ILOAD 22V, 0.2A ILOAD 3.20 4.85 11.64 12.0 1.20 1.230 1.26 3.40 5.15 12.36 Unit
Feedback Voltage
Feedback Bias Current Oscillator Frequency Saturation Voltage Duty Cycle (ON) Duty Cycle (OFF) Current Limit Output Leakage Current
FOSC VSAT
12V, ILOAD IK1509-5 12V, ILOAD IK1509-12 15V, ILOAD IK1509-ADJ 12V, ILOAD IK1509-ADJ 4.5V 22V, 0.2A ILOAD VOUT programmed IK1509-ADJ; 1.3V
1.10
IOUT (Note 1,2) (Note (Note
Peak Current (Note 1,2) Output (Note 1,3) Output -1V,
Quiescent Current Standby Quiescent Current ON/OFF Logic Input Threshold Voltage ON/OFF Logic Input Current
ISTBY
(Note ON/OFF (OFF), (Regulator High (Regulator OFF) VLOGIC 2.5V (regulator OFF) VLOGIC 0.5V (regulator
IK1509-xx
Note elements connected output pin. Note Feedback removed from output connected force output transistor switch Note Feedback removed from output connected 3.3V, version, version. force output transistor switch OFF.
Typical Performance Characteristics
SWITCHING FREQUENCY
OPERATING QUIESCENT CURRENT
ON/OFF CURRENT
EFFICIENCY
SHUTDOWN QUIESCENT CURRENT
SWITCH CURRENT LIMIT
IK1509-xx
Package Dimensions
SOP-8
SUFFIX SOIC 012AA) Dimension,
Symbol
1.35 0.33 1.27 5.72 0.19 0.25
1.75 0.51 1.27
0.25 (0.010)
SEATING PLANE
0.25 0.25
NOTES: Dimensions include mold flash protrusion. Maximum mold flash protrusion 0.15 (0.006) side 0.25 (0.010) side.

IK1509-xx 3.3V, 12V, adjustable output versions Adjustable versio

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