AP3406AMM-ADJTRG1 [BCDSEMI]
1.1MHz, 800mA SYNCHRONOUS DC-DC BUCK CONVERTER; 为1.1MHz ， 800毫安同步DC -DC降压转换器
| 型号： | AP3406AMM-ADJTRG1 |
| 厂家： | 
BCD SEMICONDUCTOR MANUFACTURING LIMITED |
| 描述： | 1.1MHz, 800mA SYNCHRONOUS DC-DC BUCK CONVERTER |
| 文件： | 总13页 (文件大小：655K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Data Sheet
1.1MHz, 800mA SYNCHRONOUS DC-DC BUCK CONVERTER AP3406A
Features
General Description
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High Efficiency: up to 95%
Output Current: 800mA
Input Voltage Range: 2.5V to 5.5V
Fixed 1.1MHz Frequency
Current Mode Control
100% Duty Cycle in Dropout
Built-in Short Circuit Protection
Built-in Thermal Shutdown Function
Built-in Current Limit Function
Shutdown Current: <1μA
The AP3406A is a 1.1MHz fixed frequency, current
mode, PWM synchronous buck (step-down) DC-DC
converter, capable of driving a 800mA load with high
efficiency, excellent line and load regulation. The
device integrates a main switch and a synchronous
switch without an external Schottky diode. It is ideal
for powering portable equipment that runs from a
single Li-ion battery.
A standard series of inductors are available from
several different manufacturers optimized for use
with the AP3406A. This feature greatly simplifies the
design of switch-mode power supplies.
Applications
This IC is available in TSOT-23-5, MSOP-10 and
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GPS
WiFi Card
Portable Media Player
Digital Still and Video Cameras
DFN-2×2-6(1) packages.
TSOT-23-5
MSOP-10
DFN-2×2-6(1)
Figure 1. Package Types of AP3406A
Sep 2011 Rev. 1. 4
BCD Semiconductor Manufacturing Limited
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Data Sheet
1.1MHz, 800mA SYNCHRONOUS DC-DC BUCK CONVERTER AP3406A
Pin Configuration
KT Package
TSOT-23-5
MM Package
MSOP-10
DN Package
DFN-2×2-6(1)
Mark
Pin 1
PGND
VIN
NC
1
2
3
4
5
10
9
EN
GND
SW
FB
FB
1
2
3
6
5
4
1
2
3
5
4
NC
SW
EN
NC
NC
8
GND
NC
GND
SW
EN
7
6
VIN
VIN
FB
Figure 2. Pin Configuration of AP3406A (Top View)
Pin Description
Pin Number
MSOP-10
Pin Name
Function
TSOT-23-5
DFN-2×2-6(1)
Control input pin. Forcing this pin above
1.5V enables the IC. Forcing this pin
below 0.6V shuts down the IC. When
the IC is in shutdown mode, all
functions are disabled to decrease the
supply current below 1μA
1
8
2
EN
2
3
3
9
5
4
GND
SW
Ground pin
Power switch output pin. Inductor
connection to drain of the internal PFET
and NFET switches
Supply input pin. Bypass to GND with a
10μF or greater ceramic capacitor
Feedback pin. Connect it with an
external resistor divider network to
program the system output voltage
4
5
1
5
3
VIN
FB
6
1
2, 4, 6, 7
10
NC
No connection
PGND
Power ground pin
Sep 2011 Rev. 1. 4
BCD Semiconductor Manufacturing Limited
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Data Sheet
1.1MHz, 800mA SYNCHRONOUS DC-DC BUCK CONVERTER AP3406A
Functional Block Diagram
Figure 3. Functional Block Diagram of AP3406A
Ordering Information
AP3406A
-
G1: Green
Circuit Type
Package
TR: Tape & Reel
KT: TSOT-23-5
MM: MSOP-10
ADJ: Adjustable Voltage
DN: DFN-2×2-6(1)
Temperature
Range
Package
Part Number
Marking ID
Packing Type
TSOT-23-5
MSOP-10
AP3406AKT-ADJTRG1
AP3406AMM-ADJTRG1
AP3406ADN-ADJTRG1
L2A
Tape & Reel
Tape & Reel
Tape & Reel
-40 to 85°C
3406AMM-G1
BA
DFN-2×2-6(1)
BCD Semiconductor's Pb-free products, as designated with "G1" suffix in the part number, are RoHS
compliant and green.
Sep 2011 Rev. 1. 4
BCD Semiconductor Manufacturing Limited
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Data Sheet
1.1MHz, 800mA SYNCHRONOUS DC-DC BUCK CONVERTER AP3406A
Absolute Maximum Ratings (Note 1)
Parameter
Symbol
VIN
Value
Unit
V
Input Voltage
-0.3 to 6
Feedback Voltage
EN Pin Voltage
SW Pin Voltage
VFB
-0.3 to VIN +0.3
-0.3 to VIN+0.3
-0.3 to VIN+0.3
V
VEN
V
VSW
V
TSOT-23-5
250
135
100
Thermal Resistance
ºC/W
MSOP-10
θJA
DFN-2×2-6(1)
Operating Junction Temperature
Storage Temperature
TJ
150
ºC
ºC
ºC
TSTG
TLEAD
-65 to 150
260
Lead Temperature (Soldering, 10sec)
Note 1: Stresses greater than 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 Ratings” for extended periods may affect device reliability.
Recommended Operating Conditions
Parameter
Symbol
VIN
Min
2.5
Max
Unit
V
Input Voltage
5.5
Maximum Output Current
Operating Ambient Temperature
IOUT (MAX)
TA
800
-40
mA
ºC
85
Sep 2011 Rev. 1. 4
BCD Semiconductor Manufacturing Limited
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Data Sheet
1.1MHz, 800mA SYNCHRONOUS DC-DC BUCK CONVERTER AP3406A
Electrical Characteristics
VIN =VEN=3.6V, TA=25℃, unless otherwise specified. Specifications with boldface type apply over full
operating temperature range from -40 to 85ºC.
Parameters
Symbol
ICC
Conditions
Min
Typ
400
Max
600
1
Unit
μA
Supply Current
VFB=0.55V
Shutdown Supply Current
ISHDN
VEN=0V, VIN=5.5V
Rising edge
0.01
μA
Under Voltage Lockout
Threshold
VUVLO
2.27
V
Under Voltage Lockout
Hysteresis
VHUVLO
IFB
200
0.5
mV
nA
V
Feedback Bias Current
VFB=0.65V
IOUT=100mA
VIN=2.5V,
-50
50
0.588/
0.612/
Feedback Voltage
VFB
0.600
0.582
0.618
800
800
800
V
OUT=0.9V
VIN=3.6V,
OUT=1.2V
VIN=4.6V,
OUT=3.3V
Maximum Output Current
mA
IOUT (MAX)
V
V
Switch Current Limit
Oscillator Frequency
ILIM
fOSC
VENL
VENH
IH
VFB=0.55V
0.95
0.8
1.25
1.1
A
1.4
0.6
MHz
EN Pin Threshold
V
1.5
-0.1
-0.1
VEN=3.6V
VEN=0V
0.1
0.1
μA
μA
EN Pin Input Leakage
Current
IL
Internal
PFET
On
RDSONP
ISW=100mA
ISW=-100mA
0.44
Ω
Resistance
Internal
NFET
On
RDSONN
DMAX
TSS
0.29
100
220
Ω
%
μs
Resistance
Maximum Duty Cycle
VFB=0.55V
VEN=0V to VIN
IOUT＝50mA
Soft-start Time
Thermal Shutdown
Threshold
TOTSD
THYS
160
30
ºC
ºC
Thermal Shutdown
Hysteresis
Sep 2011 Rev. 1. 4
BCD Semiconductor Manufacturing Limited
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Data Sheet
1.1MHz, 800mA SYNCHRONOUS DC-DC BUCK CONVERTER AP3406A
Typical Performance Characteristics
L=10μH, CIN=COUT=10μF, TA=25oC, unless otherwise noted.
0.7
1.4
0.6
0.5
0.4
0.3
0.2
1.3
1.2
1.1
1.0
0.9
0.8
VIN=3.6V
VOUT=1.8V
IOUT=0A
VIN=3.6V
VFB=0.55V
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
6.0
-60
-40
-20
0
20
40
60
80
100 120 140 160
Input Voltage (V)
Temperature (oC)
Figure 4. Frequency vs. Input Voltage
Figure 5. Supply Current vs. Temperature
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0
VIN=3.6V
VIN=3.6V
VOUT=1.8V
VFB=0.55V
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
-60
-40
-20
0
20
40
60
80
100
Temperature (OC)
Output Current (A)
Figure 6. Current Limit vs. Temperature
Figure 7. Output Voltage vs. Output Current
Sep 2011 Rev. 1. 4
BCD Semiconductor Manufacturing Limited
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Data Sheet
1.1MHz, 800mA SYNCHRONOUS DC-DC BUCK CONVERTER AP3406A
Typical Performance Characteristics (Continued)
400ns/div
VSW
VSW
2V/div
2V/div
VOUT
VOUT
20mV/div
20mV/div
400ns/div
400ns/div
Figure 8. Light Load Operation
(VIN=3.6V, VOUT=1.8V, IOUT=0mA)
Figure 9. Heavy Load Operation
(VIN=3.6V, VOUT=1.8V, IOUT=800mA)
IIN
IOUT
500mA/div
500mA/div
VOUT
2V/div
VOUT
100mV/div
VEN
2V/div
200μs/div
400μs/div
Figure 10. Load Transient
Figure 11. Start up from Shutdown
(VIN=3.6V, VOUT=1.8V, IOUT=0mA to 800mA)
(VIN=3.6V, VOUT=1.8V, RLOAD=2.5Ω)
Sep 2011 Rev. 1. 4
BCD Semiconductor Manufacturing Limited
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Data Sheet
1.1MHz, 800mA SYNCHRONOUS DC-DC BUCK CONVERTER AP3406A
Typical Performance Characteristics (Continued)
VOUT
1V/div
VOUT
1V/div
VSW
VSW
2V/div
2V/div
IL
1A/div
IL
1A/div
10μs/div
40μs/div
Figure 12. Short Circuit Protection
(VIN=3.6V, VOUT=1.8V, no load)
Figure 13. Short Circuit Recovery
(VIN=3.6V, VOUT=1.8V, no load)
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.0
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.0
TSOT-23-5
MSOP-10
TSOT-23-5
MSOP-10
VIN=4.2V
VOUT=3.3V
L=10μH
VIN=3.6V
VOUT=1.8V
L=10μH
0.1
1
0.1
1
Output Current (A)
Output Current (A)
Figure 14. Efficiency vs. Output Current
Figure 15. Efficiency vs. Output Current
Sep 2011 Rev. 1. 4
BCD Semiconductor Manufacturing Limited
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Data Sheet
1.1MHz, 800mA SYNCHRONOUS DC-DC BUCK CONVERTER AP3406A
Typical Performance Characteristics (Continued)
2.0
1.5
1.0
0.5
0.0
-0.5
-1.0
VIN=3.6V
VOUT=1.8V
-1.5
-2.0
-60
-40
-20
0
20
40
60
80
100
Temperature (oC)
Figure 16. Normalized Feedback Voltage vs. Temperature
Typical Application
150k
R2
300k
R1
EN
VIN
FB
VOUT
VIN
L
AP3406A-ADJSW
2.5V to 5.5V
1.8V
800mA
10μH
CIN
COUT
GND
10μF
10μF
Figure 17. Typical Application of AP3406A
Sep 2011 Rev. 1. 4
BCD Semiconductor Manufacturing Limited
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Data Sheet
1.1MHz, 800mA SYNCHRONOUS DC-DC BUCK CONVERTER AP3406A
Mechanical Dimensions
TSOT-23-5
Unit: mm(inch)
Sep 2011 Rev. 1. 4
BCD Semiconductor Manufacturing Limited
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Data Sheet
1.1MHz, 800mA SYNCHRONOUS DC-DC BUCK CONVERTER AP3406A
Mechanical Dimensions (Continued)
MSOP-10
Unit: mm(inch)
Sep 2011 Rev. 1. 4
BCD Semiconductor Manufacturing Limited
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Data Sheet
1.1MHz, 800mA SYNCHRONOUS DC-DC BUCK CONVERTER AP3406A
Mechanical Dimensions (Continued)
DFN-2×2-6(1)
Unit: mm(inch)
Sep 2011 Rev. 1. 4
BCD Semiconductor Manufacturing Limited
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