AP1515-SA [DIODES]
Switching Regulator, Voltage-mode, 2.5A, 173kHz Switching Freq-Max, BIPolar, PDSO8, LEAD FREE, SOP-8;型号: | AP1515-SA |
厂家: | DIODES INCORPORATED |
描述: | Switching Regulator, Voltage-mode, 2.5A, 173kHz Switching Freq-Max, BIPolar, PDSO8, LEAD FREE, SOP-8 开关 光电二极管 |
文件: | 总9页 (文件大小:197K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
Not Recommended for New Design
AP1515
150KHz, 1.5A PWM Buck DC/DC Converter
Features
General Description
- Output voltage: 3.3V and adjustable output
version
The AP1515 series are monolithic IC designed for a
step-down DC/DC converter, and own the ability of
driving a 1.5A load without additional transistor
component. Due to reducing the number of external
component, the board space can be saved easily.
The external shutdown function can be controlled
by logic level and then come into standby mode.
The internal compensation makes feedback control
have good line and load regulation without external
design. Regarding protected function, thermal
shutdown is to prevent over temperature operating
from damage, and current limit is against over
current operating of the output switch. If current
limit function occurred and VFB is down to 0.5V
below, the switching frequency will be reduced.
- Adjustable version output voltage range, 1.23V to
18V+4%
- 150KHz +15% fixed switching frequency
- Voltage mode non-synchronous PWM control
- Thermal-shutdown and current-limit protection
- Operating voltage can be up to 22V
- Output load current: 1.5A
- SIP-4L, SOP-8 Pb-Free package
- Low power standby mode
- Built-in switching transistor on chip
- Very Low Cost
Applications
The AP1515 series operates at
a switching
frequency of 150KHz thus allowing smaller sized
filter components than what would be needed with
lower frequency switching regulators. Other
features include a guaranteed +4% tolerance on
output voltage under specified input voltage and
output load conditions, and +15% on the oscillator
frequency. The output version included fixed 3.3V
and an adjustable type.
- Simple High-efficiency step-down regulator
- On-card switching regulators
- Positive to negative converter
Pin Assignments
Pin Descriptions
Name
VIN
Output
FB
SD
GND
Description
Operating voltage input
Switching output
Output voltage feedback control
ON/OFF Shutdown
Ground
(Front View)
1515
1 : VIN
2 : Output
3 : FB
4 : GND
1
2
3
4
SIP-4L
(Top View)
VIN
Output
FB
GND
GND
GND
GND
1
8
2
3
4
7
6
5
SD
SOP-8L
This datasheet contains new product information. Anachip Corp. reserves the rights to modify the product specification without notice. No liability is assumed as a result of the use of
this product. No rights under any patent accompany the sale of the product.
Rev.1.1 Oct 24, 2005
1/9
Not Recommended for New Design
AP1515
150KHz, 1.5A PWM Buck DC/DC Converter
Ordering Information
AP1515 XX X X
Package
Output version
Packing
P: SIP-4L(Bulk) Blank : Tube
Blank : Adjustable
-33 : 3.3V
A
: Taping
S: SOP-8L
Block Diagram
SD
VIN
200mV
220mV
Current
Source
1.235V
Reference
2.5V
Start
up
Regulator
bias
+
Comp
_
_
Comp
+
Frequecy
compen-
sation
+
_
_
Amp
1.5A
Comp
Pre-driver
FB
Switch
+
Output
Gnd
150KHz
OSC.
Thermal
Shutdown
Anachip Corp.
www.anachip.com.tw
Rev.1.1 Oct 24, 2005
2/9
Not Recommended for New Design
AP1515
150KHz, 1.5A PWM Buck DC/DC Converter
Absolute Maximum Ratings
Symbol
Parameter
Rating
Unit
VCC
VSD
VFB
VOUT
PD
Supply Voltage
+24
-0.3 to +18
-0.3 to +18
-1
V
ON/OFF Pin input voltage
Feedback Pin voltage
Output Voltage to Ground
Power Dissipation
V
V
V
Internally limited
-65 to +150
-40 to +125
+4.5 to +22
W
oC
oC
V
TST
Storage temperature
Operating temperature
Operating voltage
TOP
VOP
Electrical Characteristics (All Output Voltage Versions)
Unless otherwise specified, VIN= 12V for 3.3V, 5V, adjustable version and VIN=18V for the 12V version. ILOAD = 0.5A
Symbol
Parameter
Conditions
Min.
Typ.
Max.
Unit
VFB=1.3V
-50
-100
173
173
IFB
Feedback bias current
-
-10
nA
(Adjustable version only)
127
110
150
-
FOSC
FSCP
Oscillator frequency
KHz
KHz
Oscillator frequency of When current limit occurred and
10
30
50
1.4
1.5
short circuit protect
V
FB < 0.5V, Ta=25 oC
IOUT=2A
VSAT
DC
Saturation voltage
-
1.25
V
No outside circuit
VFB=0V force driver on
Max. Duty Cycle (ON) VFB=0V force driver on
Min. Duty Cycle (OFF) VFB=12V force driver off
Peak current
-
-
2
100
0
-
-
%
-
SIP-4
-
-
No outside circuit
Current limit
ICL
A
VFB=0V force driver
SOP-8
2.5
-
on
Output
No outside circuit
Output = 0
Output = -1
-
-
-200
uA
IL
leakage VFB=12V force driver off
current
VIN=22V
-
-
-5
5
mA
mA
IQ
Quiescent Current
Standby Quiescent
Current
VFB=12V force driver off
ON/OFF pin=5V
VIN=22V
10
150
200
-
ISTBY
-
-
70
uA
SIP-4
SOP-8
SIP-4
30
15
100
70
θJC
θJA
Thermal Resistance
Junction to case
oC/W
oC/W
-
-
Note 1
Junction to ambient
SOP-8
Part Number
Symbol
Parameter
Conditions
Typ.
1.23
78
Limit
Unit
4.5V < VIN < 22V
V
VMIN
VMAX
%
Output
VFB
0.2A < ILOAD < 1.5A
1.193/1.18
1.267/1.28
Feedback
AP1515-ADJ
V
V
OUT programmed for 3V
IN = 12V, ILOAD=1.5A
η
Efficiency
V
4.75V < VIN < 22V
0.2A < ILOAD < 1.5A
3.168/3.135
3.432/3.465
VOUT
Output voltage
3.3
VMIN
VMAX
%
AP1515-3.3V
η
Efficiency
VIN = 12V, ILOAD=1.5A
80
Specifications with boldface type are for full operating temperature range, the other type are for TJ=25ºC.
Note 1: Pin 4(GND) (< 1 mm length) & direct connect to internal GND layer (for SIP-4 only).
Anachip Corp.
www.anachip.com.tw
Rev.1.1 Oct 24, 2005
3/9
Not Recommended for New Design
AP1515
150KHz, 1.5A PWM Buck DC/DC Converter
Typical Application Circuit
(1) Fixed Type Circuit
FB
12V
3.3V/1.5A
Output Load
L1
3
DC Input
56uH
Output
AP1515
1
2
-33
Vin
Inductor
4
D1
Cin
Co
Capacitor
GND
Schottky
Diode
Capacitor
FB
L1
3
3.3V/1.5A
Output Load
47uH
Output
AP1515
1
4
2
-33
Vin
Inductor
5
6
7
8
GndGndGndGnd
SD
Cin
Co
D1
Schottky Diode
Capacitor
Capacitor
(2) Adjustable Type Circuit
R2
R1
FB
3
12V
L1
2.5V/1.5A
Output Load
DC Input
47uH
Output
1
2
AP1515
Vin
Inductor
4
D1
GND
Cin
Co
Schottky
Diode
Capacitor
Capacitor
R1
R2
Vout = VFB×(1 +
)
V
FB = 1.23V
R2 = 1K ~ 3K
Anachip Corp.
www.anachip.com.tw
Rev.1.1 Oct 24, 2005
4/9
Not Recommended for New Design
AP1515
150KHz, 1.5A PWM Buck DC/DC Converter
Typical Application Circuit (Continued)
(2) Adjustable Type Circuit
R2 1K
R1 1K
FB
12V
L1
2.5V/1.5A
Output Load
3
DC Input
39uH
Output
1
4
2
8
AP1515
Vin
Inductor
5
6
7
D1
SD Gnd Gnd Gnd Gnd
Cin
Co
Schottky
Diode
Capacitor
Capacitor
R1
R2
Vout = VFB×(1 +
)
VFB = 1.23V
R2 = 1K ~ 3K
Typical Performance Characteristics
AP1515 Output Voltage v.s. Temperature
AP1515 Efficiency v.s. Temperature
(Vin=12V,Vout=3.3V,Io=1.5A)
(Vin=12V ,Io=1.5A)
3.5
3.45
3.4
3.35
3.3
3.25
3.2
3.15
3.1
3.05
3
2.95
2.9
82
81
80
79
78
77
76
75
74
-50 -30 -10 10 30 50 70 90 110 130 150
Temperature (TA) (°C)
-40 -20
0
20 40 60 80 100 120 140 160
Temperature (TA) (°C)
Anachip Corp.
www.anachip.com.tw
Rev.1.1 Oct 24, 2005
5/9
Not Recommended for New Design
AP1515
150KHz, 1.5A PWM Buck DC/DC Converter
Typical Performance Characteristics (Continued)
AP1515 Saturation Voltage v.s. Temperature
(Vcc=12V,Vfb=0V,VSD=0)
AP1515 Switch Current Limit v.s. Temperature
(Vcc=12V,Vfb=0V)
1.4
1.3
1.2
3.5
3
1.1
1.5A
1A
1
0.5A
0.9
2.5
2
0.8
0.7
-50
-30
-10
10
30
50
70
90
-50
-25
0
25
50
75
100 125
Temperature (TA)ꢀ(°C)
Temperature (TA) (°C)
AP1515 Supply Current v.s. Temperature
(Vcc=12V , No Load ,Von/off =0V(Switch ON) ,Von/off =5V(Switch OFF))
15
14
13
12
11
10
9
60
55
50
45
40
35
30
Switch OFF
8
Switch ON
7
6
5
-50 -30 -10 10 30 50 70 90 110 130 150
Temperature (TA) (°C)
-50 -30 -10 10 30 50 70 90 110 130 150
Temperature (TA) (°C)
AP1515 Frequency v.s. Temperature
(Vcc=12V , Io=500mA ,Vout=5V)
AP1515 Feedback Current v.s. Temperature
(Vcc=12V , Vout=5V,Vfb=1.3V)
170
165
160
155
150
145
140
10
0
-10
-20
-30
-40
-50
-50 -30 -10 10 30 50 70 90 110 130 150
Temperature (TA) (°C)
-50 -30 -10 10 30 50 70 90 110 130 150
Temperature (TA) (°C)
Anachip Corp.
www.anachip.com.tw
Rev.1.1 Oct 24, 2005
6/9
Not Recommended for New Design
AP1515
150KHz, 1.5A PWM Buck DC/DC Converter
Function Description
Pin Functions
Feedback
Senses the regulated output voltage to complete
the feedback loop.
+VIN
This is the positive input supply for the IC switching
regulator. A suitable input bypass capacitor must be
present at this pin to minimize voltage transients
and to supply the switching currents needed by the
regulator.
SD
Allows the switching regulator circuit to be
shutdown using logic level signals thus dropping
the total input supply current to approximately
150uA. Pulling this pin below a threshold voltage of
approximately 1.3V turns the regulator on, and
pulling this pin above 1.3V (up to a maximum of
18V) shuts the regulator down. If this shutdown
feature is not needed, the SD pin can be wired to
the ground pin.
Ground
Circuit ground.
Output
Internal switch. The voltage at this pin switches
between (+VIN – VSAT) and approximately – 0.5V,
with a duty cycle of approximately VOUT / VIN. To
minimize coupling to sensitive circuitry, the PC
board copper area connected to this pin should be
kept a minimum.
Marking Information
(1) SIP-4L
( Top View )
( Top View )
Part Number: AP1515
Output Type: Adjustable
Part Number : AP1515
-33: Output Type: 3.3V
1515
Y WW X
15-33
Y WW X
Date Code
Date Code
X: Internal code
X: Internal code
WW: Nth week: 01~52
WW: Nth week: 01~52
Y: Year:
Y: Year:
"1" = 2001
"2" = 2002
"1" = 2001
"2" = 2002
(2) SOP-8L
(Top view)
Logo
Part Number
Output Type:
1515-XX
YY WW X
Blank: Adjustable
33: 3.3V
Date Code
X: Internal code
WW: Nth week
YY: Year
Anachip Corp.
www.anachip.com.tw
Rev.1.1 Oct 24, 2005
7/9
Not Recommended for New Design
AP1515
150KHz, 1.5A PWM Buck DC/DC Converter
Package Information
(1) Package Type: SIP-4L
5o
o
-7
14.25mm
+/-1.25mm
1.55mm
+/-0.1mm
0.38mm
3o-5o
1.03mm
+/-0.03mm
+/-0.1
3.65mm
+/-0.1mm
0.30mm
+/-0.1mm
0.41mm
0.46mm
+/-0.03mm
+/-0.03mm
o
5o
3o-5o
-7
1.27mm
+/-0.03mm
0.2mm Max.
1.42mm+/-0.1mm
Anachip Corp.
www.anachip.com.tw
Rev.1.1 Oct 24, 2005
8/9
Not Recommended for New Design
AP1515
150KHz, 1.5A PWM Buck DC/DC Converter
Package Information (Continued)
(2) Package Type: SOP-8L
L
VIEW "A"
D
0.015x45
VIEW "A"
7 (4X)
7 (4X)
e
B
y
Dimensions In Millimeters
Dimensions In Inches
Symbol
Min.
1.40
0.10
1.30
0.33
0.19
4.80
3.70
-
Nom.
1.60
-
Max.
1.75
0.25
1.50
0.51
0.25
5.30
4.10
-
6.20
1.27
0.10
8O
Min.
Nom.
0.063
-
Max.
A
A1
A2
B
0.055
0.040
0.051
0.013
0.0075
0.189
0.146
-
0.069
0.100
0.059
0.020
0.010
0.209
0.161
-
0.244
0.050
0.004
8O
1.45
0.41
0.20
5.05
3.90
1.27
5.99
0.71
-
0.057
0.016
0.008
0.199
0.154
0.050
0.236
0.028
-
C
D
E
e
H
L
5.79
0.38
-
0.228
0.015
-
y
0O
-
0O
-
θ
Anachip Corp.
www.anachip.com.tw
Rev.1.1 Oct 24, 2005
9/9
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