Download IK1509-xx

G
M
K
D
0.25 (0.010) M
H
J
H
T
Switching
Regulators
Dimensions “A”,
“B” do notVoltage
include mold
flash or protrusions.
0°
10°
K
2.92
3.81
L
7.62
8.26
M
0.2
0.36
IK1509-xx
N
ximum mold flash or protrusions 0.25 mm (0.010) per side.
Dimensions
J
TECHNICAL DATA
ES:
ES:
7.62
0.38
Features







H



3.3V, 5V, 12V, and adjustable output versions
SUFFIX
SOICrange,
Adjustable versionDoutput
voltage
(MS
012AA)
1.23V to 18V ± 3% max over line and load
conditions
Guaranteed 2A output load current
Input voltage
range up to 22V
A
Built-in
Switching
Transistor on chip
8
5
Excellent line and load regulation specifications
150kHz fixed frequency internal oscillator
TTL shutdown capability
B P
Low power standby mode, IQ typically 80uA
Thermal shutdown and current limit protection
Bare chip is available
1
G
4
C
-TD
K
SEATING
PLANE
R x 45
Device
J IK1509XXDT
F
0.25 (0.010) M T C M
Applications
 Simple high-efficiency step-down regulator
 On-card switching regulators
AandPositive
B do not
mold
flash or protrusion.
to include
negative
converter
Maximum mold flash or protrusion 0.15 mm (0.006) per side
r A; for B ‑ 0.25 mm (0.010) per side.
Description
Dimension, mm
Symbol
SOP-8
MIN
MAX
A
4.8
5
B
3.8
4
C
1.35
1.75
D
0.33
0.51
ORDERING INFORMATION
F
0.4
1.27
Operating
G Package
Temperature Range
M to 125 C
TA = -40
SOP-8
for all packages H
Packing
1.27
Tape
& Reel
5.72
J
0°
8°
K
0.1
0.25
M
0.19
0.25
P
5.8
6.2
R
0.25
0.5
The IK1509 series of regulators are monolithic integrated circuits that provide all the active
functions for a step-down switching regulator, capable of driving a 2A load with excellent line and
load regulation. These devices are available in fixed output voltages of 3.3V, 15V, 12V and an
adjustable output version. Requiring a minimum number of external components, these regulators
are simple to use.
The IK1509 series operates at a switching frequency of 150kHz. Other features include a
guaranteed ± 3% tolerance on output voltage under specified input voltage and output load
conditions, and ± 15% on the oscillator frequency. External shutdown is included, featuring
typically 80uA standby current. Self protection features include a two stage frequency reducing
current limit for output switch and an over temperature shutdown for complete protection under
°
°
fault conditions. The over temperature shutdown level is about 145 C with 5 C hysteresis.
1
2011, February, Rev. 02
IK1509-xx
Absolute Maximum Rating
o
(TA = 25 C)
Characteristic
Maximum Input Supply Voltage
ON/OFF Pin Input Voltage
Feedback Pin Voltage
Output Voltage to Ground
Power Dissipation
Storage Temperature Range
Operating Temperature Range
Maximum Junction Temperature
ESD Susceptibility (Human Body Model)
Operating Supply Voltage
Symbol
Value
Unit
VI
VIN
VFB
VOUT
PD
Tstg
TJ
TJMAX
VESD
VOP
+30
-0.3  V  VI
-0.3  V  VI
-1
Internally limited
-65 to +150
-40  TJ  +125
150
2
4.5 to +25
V
V
V
V
W
o
C
o
C
o
C
kV
V
* Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device.
These are stress ratings only and functional operation of the device at these or any other conditions beyond those
indicated under “recommended operating conditions” is not implied.
Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
Typical Application
Fixed Output Voltage Versions
Adjustable Type Circuit
2
2011, February, Rev. 02
IK1509-xx
Pin Assignments
Pin Descriptions
Block Diagram
3
2011, February, Rev. 02
IK1509-xx
Electrical Characteristics
o
Unless otherwise specified, TJ = 25 C, VIN = 12V for the 3.3V, 5V, and Adjustable version and VIN = 18V for
the 12V version. ILOAD = 500mA.
Characteristic
Output Voltage
Symbol
VOUT
Efficiency
Test Condition
Min
Typ
Max
4.75V  VIN  22V,
0.2A  ILOAD  2A
3.20
3.3
3.40
IK1509–5
7V  VIN  22V,
0.2A  ILOAD  2A
4.85
5.0
5.15
IK1509–12
15V  VIN  22V,
0.2A  ILOAD  2A
11.64
12.0
12.36
IK1509–3.3
IK1509–3.3

Feedback Voltage
VFB
Feedback Bias
Current
IFB
VIN = 12V,
ILOAD = 2A
IK1509–5
VIN = 12V,
ILOAD = 2A
IK1509–12
VIN = 15V,
ILOAD = 2A
IK1509–ADJ
VIN = 12V,
ILOAD = 2A
IK1509–ADJ 4.5V  VIN  22V,
0.2A  ILOAD  2A
VOUT programmed
for 3V
IK1509-ADJ; VFB = 1.3V
83
76
1.20
127
1.26
V
-10
-50
nA
150
173
kHz
1.3
V
VSAT
IOUT = 2A
1.10
DC
(Note 1,2)
(Note 2)
100
(Note 3)
Peak Current
%
1.230
Saturation Voltage
ICL
%
90
FOSC
Max Duty Cycle
(OFF)
Current Limit
V
78
Oscillator Frequency
Max Duty Cycle (ON)
Unit
%
0
2.4
3
3.7
A
50
A
(Note 1,2)
Output Leakage
Current
IL
Output = 0V
(Note 1,3)
Output = -1V, VIN = 22V
1
10
mA
(Note 3)
5
10
mA
ON/OFF pin = 5V (OFF), VIN = 22V
80
150
A
1.3
0.6
V
5
15
A
Quiescent Current
IQ
Standby Quiescent
Current
ISTBY
ON/OFF Pin Logic
Input
Threshold Voltage
VIL
Low (Regulator ON)
VIH
High (Regulator OFF)
IH
VLOGIC = 2.5V (regulator OFF)
IL
VLOGIC = 0.5V (regulator ON)
ON/OFF Pin Logic
Input
Current
2.0
5
4
2011, February, Rev. 02
IK1509-xx
Note 1: No elements connected to output pin.
Note 2: Feedback pin removed from output and connected to 0V to force the output transistor switch ON.
Note 3: Feedback pin removed from output and connected to 12V for the 3.3V, 5V, and the ADJ version, and
15V for the 12V version. To force the output transistor switch OFF.
Typical Performance Characteristics
SWITCHING FREQUENCY
OPERATING QUIESCENT CURRENT
ON/OFF CURRENT
EFFICIENCY
SHUTDOWN QUIESCENT CURRENT
SWITCH CURRENT LIMIT
5
2011, February, Rev. 02
N
G
M
K
0.25 (0.010) M
J
H
D
T
NOTES:
1. Dimensions “A”, “B” do not include mold
flash or protrusions.
Package
Dimensions
Maximum mold flash or protrusions 0.25 mm (0.010) per side.
SOP-8
G
2.54
H
7.62
J
0°
10°
K
2.92
IK1509-xx
3.81
L
7.62
8.26
M
0.2
0.36
N
0.38
D SUFFIX SOIC
(MS - 012AA)
Dimension, mm
A
8
5
B
H
1
G
P
4
D
K
MIN
MAX
A
4.8
5
B
3.8
4
C
1.35
1.75
D
0.33
0.51
F
0.4
1.27
R x 45
C
-T-
Symbol
SEATING
PLANE
J
F
0.25 (0.010) M T C M
NOTES:
1. Dimensions A and B do not include mold flash or protrusion.
2. Maximum mold flash or protrusion 0.15 mm (0.006) per side
for A; for B ‑ 0.25 mm (0.010) per side.
M
G
1.27
H
5.72
J
0°
8°
K
0.1
0.25
M
0.19
0.25
P
5.8
6.2
R
0.25
0.5
6
2011, February, Rev. 02