AS1302-BWLT [AMSCO]
5V/30mA Adaptive Inductorless Boost Converter; 5V / 30毫安自适应无电感升压转换器
| 型号： | AS1302-BWLT |
| 厂家： | 
AMS(艾迈斯) |
| 描述： | 5V/30mA Adaptive Inductorless Boost Converter |
| 文件： | 总18页 (文件大小：1168K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Datasheet
AS1302
5V/30mA Adaptive Inductorless Boost Converter
1 General Description
2 Key Features
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Up to 90% Efficiency
The AS1302 is a 30mA inductorless boost converter
using a double H-bridge charge-pump topology with two
external flying capacitors. The AS1302 charge pump
features 1:2 and 2:3 operation modes as well as a 1:1
operation mode where the input is directly connected to
the output.
2.9V to 5.15V Input Voltage
Regulated 5V Output
Automatic Mode Switching
<1µA Shutdown Current
Startup with Full Load (within 1ms)
Up to 30mA Load Current
Short Circuit Protection
Output Disconnected During Shutdown
Soft-Start
The AS1302 runs on a 1.2MHz fixed frequency and is
utilized with a low noise regulation scheme to allow
usage together with sensitive RF circuitry from the same
battery supply. Additionally to increase efficiency the
AS1302 switches to 49kHz at light loads.
Designed to reside in portable and space limited
equipment the 1.2MHz charge pump converts a 2.9V to
5.15V input to regulated 5V output with 3% accuracy.
No Inductor Required
Small External Components Required
(COUT =2.2µF, CFLY =220nF)
The shutdown function reduces the supply current to
<1µA and disconnects the load from the output. The
integrated soft-start circuitry prevents high inrush
currents being drawn from the battery during start-up.
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Low Noise Fixed Frequency (1.2MHz, 49kHz)
Charge Pump:
- 1:1 Battery Feed Through Mode
- 2:3 Single Phase Mode
- 1:2 Single Phase Mode
Package Options:
The AS1302 includes built-in under-voltage lockout,
short circuit-, and thermal protection circuitry.
The AS1302 is available in TDFN (3x3x0.8mm) 10-pin
and an extremely small 1.2x1.2mm WL-CSP 8-bumps
package with 0.4mm pitch.
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- TDFN (3x3x0.8mm) 10-pin
- WL-CSP 8-bumps with 0.4mm Pitch
3 Applications
The device is ideal for two or three AA cells or a single
Li-Ion battery cell to 5V conversion, mobile phones,
portable instruments, microprocessor based systems
and remote data-acquisition systems.
Figure 1. AS1302 - Typical Application Diagram
CFLY1
C1+
220nF
C1-
VOUT = 5V
VBATT
2.9V to 5.15V
VBATT
EN
VOUT
GND
CBAT
2.2µF
COUT
2.2µF
AS1302
On
Off
C2+
C2-
220nF
CFLY2
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Revision 1.02
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AS1302
Datasheet - Pin Assignments
4 Pin Assignments
Figure 2. Pin Assignments (Through View)
C1- GND
EN
A3
GND 1
C1- 2
10 EN
A1
A2
9 VBATT
8 C2-
B1
B3
C3
C1+
VBATT
NC 3
AS1302
C1+
NC
4
5
7
6
C1
C2
GND
VOUT
C2+
VOUT C2+ C2-
WL-CSP 8-bumps
TDFN (3x3x0.8mm) 10-pin
Pin Descriptions
Table 1. Pin Descriptions
Pin Name
C1-
Pin Number
Description
A1
A2
Connector 1-. Negative terminal of flying cap 1.
Ground.
GND
Enable. (operating if EN = 1). Set this digital input to logic high for normal
operation. For shutdown, set to logic low.
Connector 1+. Positive terminal of flying cap 1.
A3
B1
B3
EN
C1+
+2.9V to 5.15V Input Voltage. Bypass this pin to GND with a ≥2.2µF low
ESR ceramic capacitor.
VBATT
+5V Output Voltage. This pin must be bypassed with a ≥2.2µF low ESR
ceramic capacitor.
C1
VOUT
Connector 2+. Positive terminal of flying cap 2.
C2
C3
C2+
C2-
Connector 2-. Negative terminal of flying cap 2.
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AS1302
Datasheet - Absolute Maximum Ratings
5 Absolute Maximum Ratings
Stresses beyond those listed in Table 2 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 in Section 6 Electrical
Characteristics on page 4 is not implied. Exposure to absolute maximum rating conditions for extended periods may
affect device reliability.
Table 2. Absolute Maximum Ratings
Parameter
All pins to GND
Min
-0.3
-40
-65
Max
+7.0
+85
Units
V
Notes
Operating Temperature Range
Storage Temperature Range
ºC
ºC
kV
V
+125
HBM MIL-Std. 883E 3015.7 methods
CDM JESD22-C101C methods
2
ESD
500
The reflow peak soldering temperature
(body temperature) specified is in
accordance with IPC/JEDEC J-STD-
020D “Moisture/Reflow Sensitivity
Classification for Non-Hermetic Solid
State Surface Mount Devices”.
Package Body Temperature
+260
ºC
The lead finish for Pb-free leaded
packages is matte tin (100% Sn).
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AS1302
Datasheet - Electrical Characteristics
6 Electrical Characteristics
VBATT = 2.9V to 5.15V, VOUT = 5V, COUT = CBAT = 2.2µF, CFLY1 = CFLY2 =220nF, TAMB = -40 to +85ºC. Typical values
are at TAMB = +25ºC and VIN = 3.3V, unless otherwise specified.
Table 3. Electrical Characteristics
Symbol
VBATT(on)
VBATT(off)
VBATT
Parameter
Undervoltage Lockout
Undervoltage Lockout
Battery Supply Voltage
Output Voltage Accurracy
Conditions
Min
Typ
2.8
2.5
Max
2.9
Units
Rising VBATT
Falling VBATT
V
V
V
V
2.4
2.9
2.8
5.15
5.15
VOUT
IOUT = 0mA, 15mA
4.85
5.0
2
ΔVO/ΔIO11 Load Regulation in 1:1 Mode
ΔVO/ΔIO23 Load Regulation in 2:3 Mode
VBATT = 5.4V, IOUT = 10~30mA
VBATT = 4.3V, IOUT = 10~30mA
VBATT = 3.3V, IOUT = 10~30mA
1:1 / 2:3 mode, falling VBATT
2:3 / 1:2 mode, falling VBATT
Mode switching voltage hysteresis
3
mV/mA
Load Regulation in 1:2 Mode
ΔVO/ΔIO12
Vtgr11/23
3
5.1
3.6
150
V
Mode Switching Voltage
Vtgr23/12
mV
mA
Load Current1
IOUT
30
VBATT = 3.6V, IOUT = 30mA
VBATT = 3.6V, IOUT = 2mA
mVPP
mVPP
22
40
Vripple
Output Voltage Ripple
Inrush Current2
Iinr
150
150
mA
mA
Ishort
Short-Circuit Current
1:2 mode, VBATT = 2.9V,
IOUT = 30mA
η12
η23
85
85
%
%
Efficiency in Switching Mode
2:3 mode, VBATT = 3.8V,
IOUT = 30mA
IOP12
IOP23
IOP11
IOFF
VBATT = 3.4V (1:2 mode without load)
VBATT = 4.5V (2:3 mode without load)
VBATT = 5.3V (1:1 mode without load)
EN = 0V
240
170
100
0.01
300
230
150
1
Operating Quiescent Current
Shutdown Current
µA
µA
Input Levels
Input High Level
VIH
VIL
1.1
0.0
5.5
0.4
V
V
pin EN
Input Low Level
Timing
VBATT = 3.6V, IOUT = 30mA
VBATT = 3.6V, IOUT = 2mA
0.9
40
1.2
49
1.5
65
1
MHz
kHz
ms
fOSC
Oscillator Frequency
tSTART Startup Time
0.5
Thermal Regulation
TOFF
Temperature rising
Hysteresis
145
10
Temperature Shutdown
ºC
1. The device is tested in a proprietary test mode.
2. The inrush current is limited by the internal soft-start circuitry.
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AS1302
Datasheet - Typical Operating Characteristics
7 Typical Operating Characteristics
VBATT = 3.3V, VOUT = 5V, COUT = CBAT = 2.2µF, CFLY1 = CFLY2 =220nF, TAMB = +25ºC, unless otherwise specified.
Figure 3. Efficiency vs. Input Voltage; ILOAD = 1mA
Figure 4. Efficiency vs. Input Voltage; ILOAD = 10mA
100
100
90
80
70
60
90
80
70
60
50
50
40
30
20
10
0
1:2
mode
2:3
mode
1:2
2:3
1:1
1:1
mode
mode
mode
mode
40
30
20
10
0
2.6
3
3.4
3.8
4.2
4.6
5
5.4
2.6
3
3.4
3.8
4.2
4.6
5
5.4
Input Voltage (V)
Input Voltage (V)
Figure 5. Efficiency vs. Input Voltage; ILOAD = 20mA
Figure 6. Efficiency vs. Input Voltage; ILOAD = 30mA
100
100
90
80
70
60
90
80
70
60
50
40
30
20
10
0
50
40
30
20
10
0
1:2
mode
2:3
mode
1:2
mode
2:3
mode
1:1
mode
1:1
mode
2.6
3
3.4
3.8
4.2
4.6
5
5.4
2.6
3
3.4
3.8
4.2
4.6
5
5.4
Input Voltage (V)
Input Voltage (V)
Figure 7. Quiescent Current vs. Input Voltage
Figure 8. Quiescent Current vs. Temperature
300
300
Vi n=3.4V (1:2 Mode)
275
250
225
200
175
150
125
100
75
275
Vi n=4.5V (2:3 Mode)
Vi n=5.3V (1:1 Mode)
250
225
200
175
150
125
100
75
50
50
2.4
2.9
3.4
3.9
4.4
4.9
5.4
-45 -30 -15
0
15 30 45 60 75 90
Input Voltage (V)
Temperature (°C)
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AS1302
Datasheet - Typical Operating Characteristics
Figure 9. Efficiency vs. Output Current; VBATT = 2.9V
Figure 10. Efficiency vs. Output Current; VBATT = 3.3V
100
100
90
80
70
90
80
70
60
60
49kHz 1.2MHz
49kHz 1.2MHz
50
40
30
20
10
0
50
40
30
20
10
0
0.1
1
10
100
0.1
1
10
100
Output Current (mA)
Output Current (mA)
Figure 11. Efficiency vs. Output Current; VBATT = 3.6V
Figure 12. Efficiency vs. Output Current; VBATT = 4V
100
100
90
80
70
90
80
70
60
60
49kHz 1.2MHz
49kHz 1.2MHz
50
50
40
30
20
10
0
40
30
20
10
0
0.1
1
10
100
0.1
1
10
100
Output Current (mA)
Output Current (mA)
Figure 13. Efficiency vs. Output Current; VBATT = 4.3V
Figure 14. Efficiency vs. Output Current; VBATT = 5.4V
100
100
90
80
70
90
80
permanent 1:1 Mode
70
60
60
50
40
30
20
10
0
49kHz 1.2MHz
50
40
30
20
10
0
0.1
1
10
100
0.1
1
10
100
Output Current (mA)
Output Current (mA)
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AS1302
Datasheet - Typical Operating Characteristics
Figure 15. Output Voltage vs. Output Current
Figure 16. Output Voltage vs. Output Current
5.15
5.15
5.1
5.1
49kHz
1.2MHz
49kHz
1.2MHz
5.05
5
5.05
5
4.95
4.9
4.95
4.9
Vi n =2.9V
Vi n =3.3V
Vi n =4.3V
Vi n =3.0V
Vi n =3.6V
Vi n =4.0V
4.85
4.85
0.01
0.1
1
10
100
0.01
0.1
1
10
100
Output Current (mA)
Output Current (mA)
Figure 17. Output Voltage vs. Input Voltage
Figure 18. Output Voltage vs. Temperature
5.15
5.15
1:2
2:3
mode
mode
5.1
5.05
5
5.1
5.05
5
1:1
mode
4.95
4.9
4.95
Iout =4mA
Iout =0.1mA
4.9
Iout =10mA
Iout =20mA
Iout =10mA
Iout =30mA
Iout =30mA
4.85
4.85
2.9 3.2 3.5 3.8 4.1 4.4 4.7
Input Voltage (V)
5
5.3
-45 -30 -15
0
15 30 45 60 75 90
Temperature (°C)
Figure 19. Startup Time vs. Input Voltage; load=166Ω
1
0.875
0.75
0.625
0.5
0.375
0.25
0.125
0
2.9 3.15 3.4 3.65 3.9 4.15 4.4 4.65 4.9
Input Voltage (V)
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AS1302
Datasheet - Typical Operating Characteristics
Figure 20. Turn-ON / Turn-OFF Time @ load = 166Ω
Figure 21. Inrush Current; no load
200µs/Div
50µs/Div
Figure 22. Switching Frequency vs. Input Voltage;
IOUT = 2mA
Figure 23. Switching Frequency vs. Input Voltage;
IOUT = 20mA
65
60
55
50
45
40
1.5
1.4
1.3
1.2
1.1
1
0.9
2.9
3.2
3.5
3.8
4.1
4.4
4.7
5
2.9
3.2
3.5
3.8
4.1
4.4
4.7
5
Input Voltage (V)
Input Voltage (V)
Figure 24. Switching Frequency vs. Temperature;
IOUT = 2mA
Figure 25. Switching Frequency vs. Temperature;
IOUT = 20mA
65
60
55
50
45
40
1.5
1.4
1.3
1.2
1.1
1
0.9
-45 -30 -15
0
15 30 45 60 75 90
-45 -30 -15
0
15 30 45 60 75 90
Temperature (°C)
Temperature (°C)
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AS1302
Datasheet - Typical Operating Characteristics
Figure 26. Load Transient; Mode = 1:1,
IOUT = 30 to 10 to 30 mA
Figure 27. Load Transient; Mode = 2:3,
IOUT = 30 to 10 to 30 mA
500µs/Div
500µs/Div
Figure 28. Load Transient; Mode = 1:2,
IOUT = 30 to 10 to 30 mA
Figure 29. Load Transient; Mode = 1:2,
IOUT = 20 to 4 to 20 mA
500µs/Div
500µs/Div
Figure 30. Line Transient
Figure 31. Output Ripple
5ms/Div
10µs/Div
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AS1302
Datasheet - Detailed Description
8 Detailed Description
Functional Description
The AS1302 is a high efficiency and low noise switched capacitor DC-DC converter that is capable of boost operation.
It is equipped with two built-in coupled H-bridge type switch configurations. Based on the value of the output voltage
the system automatically initiates mode-switching to achieve the highest possible efficiency. The regulation of the
output voltage is achieved by a regulation loop, which modulates the current drive capability of the power transistors so
that the amount of charge transferred from the input to the output at each clock cycle is controlled and is equal to the
charge needed by the load.
Regulation Loop
The AS1302 operates at a constant frequency. For the regulation loop power transistors, a resistor divider and an error
amplifier are used to keep the output voltage within the allowed limits. The error amplifier takes the feedback and
reference signals as inputs and generates the error voltage signal. The error voltage controls a driver that triggers the
gate voltage of the power transistor which modulates the current drive capability of the power amplifier. The modulated
transistor controls the charge transferred from the input to the output and therefore the regulation of the output is
realized. This regulation concept which is based on adjusting the amount of charge transferred, delivers the smallest
voltage ripple possible.
Figure 32. AS1302 - Functional Block Diagram
CFLY1
C1-
CFLY2
C2-
C1+
C2+
VOUT
VBATT
CBAT
Double-H Bridge
Topology
+
COUT
i(t)dt
∫
Vctrl
Vmode
Soft-
start
Mode
Select
Temp
State Machine
&
Ref
Bias
Control Logic
POR
CLK
EN
On
Off
AS1302
GND
Light/Heavy Load Monitor
To detetect the output current in the 2:3 and in the 1:2 mode, a current sense is used. The device switches to a lower
switching frequency (49kHz typ), due to a detected light-load condition. With this frequency an excellent light-load
efficiency is achieved and no audible noise is generated. If the load is increasing (typically more than 3mA), the device
operates at 1.2MHz.
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AS1302
Datasheet - Detailed Description
Switch Configuration
The AS1302 has nine built-in power switches in the shape of two coupled H-bridge topologies. The system features
1:2 and 2:3 operation modes as well as a 1:1 operation where the input is directly connected to the output.
In 2:3 operation mode two flying capacitors are placed in series and each capacitor is charged to the half of the input
voltage. In pumping phase the flying capacitors are placed in parallel. The bottom-plates of the parallel flying
capacitors CFLY1 and CFLY2 are connected to the input voltage so that the voltage at the top-plates of the flying
capacitors is boosted to a voltage equal to VBATT + VBATT/2. By connecting the top-plates of the capacitors to the
output, the output voltage in the 2:3 mode can be up to one and a half of VBATT. If the top-plate voltage is higher than
5V, the regulation loop adapts the power transistor’s on-resistance to drop some voltage.
Figure 33. 2:3 Operating Mode
Charging Phase
Pumping Phase
VOUT
+5V
VOUT
+5V
SW1
SW2
SW1
SW2
VBATT
+2.9V to 5.15V
VBATT
+2.9V to 5.15V
CFLY1
CFLY1
CFLY2
SW3
CFLY2
SW3
SW4
SW4
In 1:2 operation both flying capacitors are placed in parallel to the input voltage, and therefore charged to the input
voltage. During pumping phase the input voltage is connected to the bottom of the charged flying capacitors. The
voltage at the top-plates of the parallel capacitors is now boosted to 2VBATT. By connecting the top-plates of the
capacitors to the output, the output can be charged to twice the voltage of VBATT. If the top-plate voltage is higher than
5V the regulation loop limits the charge transfer to the output.
Figure 34. 1:2 Operating Mode
Charging Phase
Pumping Phase
VOUT
+5V
VOUT
+5V
SW1
SW1
SW2
SW2
VBATT
VBATT
+2.9V to 5.15V
+2.9V to 5.15V
CFLY1
CFLY2
SW3
CFLY1
CFLY2
SW3
SW4
SW4
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AS1302
Datasheet - Detailed Description
Soft-start
The soft-start circuit prevents the supply from high inrush currents caused by the converter’s power-up sequence.
During the soft-start (0.5ms typ) the device limits the inrush current. The device is capable to power-up at the minimum
specified battery voltage and with the maximum load (ohmic equivalent) applied to the output.
Undervoltage Lockout, UVLO
The AS1302 is equipped with an undervoltage lockout functionality. If the battery voltage drops below 2.5V (typ) the
device enters the undervoltage lockout condition. The device remains in this condition until the battery voltage is high
enough to enter the soft start sequence. An internal hysteresis of 300mV prevents ringing during startup. If the input
voltage increases to 2.8V (typ) again after such a condition the device turns-on automatically.
Shutdown Mode
The AS1302 enters low-power shutdown mode when EN is set to logic low. In shutdown the charge-pump action is
halted, the output is completely disconnected from the input and VOUT will drop to 0V.
Short-Circuit Protection
Short-circuit protection prevents damage to the device if the output is shorted to ground. Whenever the output voltage
is pulled significantly below VBATT, short-circuit protection is triggered and limits the current. As soon as VOUT recovers
the protection is released and the device enters soft-start mode.
Thermal Shutdown
The AS1302 offers thermal shutdown, which prevents damage due to an over-temperature condition. Thermal
shutdown will be initiated if the junction temperature exceeds 145°C. If the temperature drops below this value, the
thermal shutdown will be released automatically and the device resumes operation. A hysteresis prevents the thermal
shutdown from oscillating.
Efficiency Consideration
In the 2:3 operation mode the input current of the charge pump is approximately 1.5x the load current. In an ideal
charge pump the efficiency can be calculated by:
POUT
-------------
PIN
VOUT × IOUT
-------------------------------------------
VBATT × 1, 5IOUT
VOUT
------------------------
1, 5VBATT
η =
=
=
(EQ 1)
The same works for the 1:2 operation mode. The input current of the charge pump is approximately 2x the load
current. The efficiency of a charge pump in 1:2 operation mode can be calculated by:
POUT
-------------
PIN
VOUT × IOUT
-------------------------------------
VBATT × 2IOUT
VOUT
------------------
2VBATT
η =
=
=
(EQ 2)
For typical and high output power conditions the quiescent current and the switching losses are negligible and (EQ 1)
and (EQ 2) are valid. Hence, with the same input Voltage the 2:3 operation mode will result into a higher efficiency than
the 1:2 operation mode.
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AS1302
Datasheet - Application Information
9 Application Information
External Component Selection
The high internal oscillator frequency of 1.2MHz permits the use of small capacitors for both, the flying capacitors and
the output capacitors. For any given load the value of the flying- and output capacitors as well as their ESR are
affecting the output voltage performance.
In general, the capacitor’s ESR is inversely proportional to its physical size. Larger capacitances and higher voltage
ratings tend to reduce ESR. The ESR is a function of the frequency too, so it must be rated at the devices operating
frequency. Another factor affecting capacitor ESR is temperature.
Note: Many capacitors have a huge capacity variation over temperature. This can be compensated by choosing a
capacitor with a better thermal coefficient or by choosing a larger nominal value to ensure proper operation
over temperature.
It is not critical which type of input bypass capacitor CBAT and output filter capacitor COUT is used, but it will affect the
performance of the charge pump. Low ESR capacitors should be used to minimize VOUT ripple. Multi-layer ceramic
capacitors are recommended since they have extremely low ESR and are available in small footprints.
Input Capacitor
A 2.2µF input bypass low ESR capacitor such as tantalum or ceramic is recommended to reduce noise and supply
transients. During startup and mode change it supplies a part of the peak input current drawn by the device.
Output Capacitor
The output capacitor is charged to VOUT during the pumping phase. The ESR of the output capacitor introduces spikes
in the output voltage waveform whenever the charge pump charges COUT. These spikes contribute to the ripple volt-
age of VOUT. Therefore, ceramic or tantalum low ESR capacitors are recommended for COUT to minimize the output
voltage ripple.
Table 4. Recommended Input and Output Capacitors
Part Number
C
TC Code
X5R
Rated Voltage
Dimensions
0603
Manufacturer
Murata
www.murata.com
GRM188R61C225KE15
GRM21BR71E225KA73
GRM188R60J475KE19
GRM188R60J106ME47
2.2µF
2.2µF
4.7µF
10µF
16V
25V
6.3V
6.3V
X7R
0805
X5R
0603
X5R
0603
Figure 35. Load Regulation Comparision with different
Capacitors
Figure 36. Output Ripple vs. Output Current
Comparision with different Capacitors
5.15
5.1
5.05
5
100
2.2µF16V 0603
2.2µF25V 0805
4.7µF6.3V 0603
49kHz 1.2MHz
80
60
40
20
0
10µF6.3V 0603
4.95
2.2µF16V 0603
4.9
2.2µF25V 0805
4.7µF6.3V 0603
10µF6.3V 0603
4.85
0
5
10
15
20
25
30
0
5
10
15
20
25
30
Load Current (mA)
Load Current (mA)
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AS1302
Datasheet - Application Information
Flying Capacitor Selection
To ensure the required output current and avoid high peak currents the values of the flying capacitors CFLY1 and CFLY2
are very critical. A 220nF capacitor is sufficient for most applications. Dependent on the operation mode the AS1302
alternately charges and discharges the CFLY1/2 . While the ESR of the output capacitor produces a part of the output
voltage ripple, the ESR of the flying capacitors directly adds to the charge pump’s output source resistance. Therefore
low ESR capacitors, e.g. tantalum or ceramic, are recommended for the flying capacitors as well.
Due to different materials for ceramic capacitors the on the material depending temperature and voltage coefficients
have to be considered. The capacitance of a X7R ceramic capacitor is more stable than a Z5U or Y5V ceramic
capacitor over the whole temperature range from -40°C to +85°C. As an additional effect a Z5U or Y5V ceramic
capacitor will loose about the half of his nominal capacitance when the rated voltage is applied.
It is important to choose the ceramic capacitor according to the minimum available capacitance over the operating
voltage and the bias voltage. This information is stated in the datasheets of the capacitor manufacturer.
Table 5. Recommended Flying Capacitors
Part Number
C
TC Code Rated Voltage
Dimensions
0603
Manufacturer
Murata
www.murata.com
GRM188R71E224KA88
GRM155R61A224KE19
220nF
220nF
X7R
X5R
25V
10V
0402
Layout Consideration
To achieve the best performance of the AS1302 a careful board layout is necessary to reduce the impact of the high
switching frequency and the high transient currents which are produced by the device. For a proper regulation under all
conditions a true ground plane and short connections to all external capacitors are needed.
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AS1302
Datasheet - Package Drawings and Markings
10 Package Drawings and Markings
The device is available in a TDFN (3x3x0.8mm) 10-pin and WL-CSP 8-bumps package.
Figure 37. TDFN (3x3x0.8mm) 10-pin Package Diagram
D2
D
SEE
D2/2
DETAIL B
B
L
PIN 1 INDEX AREA
(D/2 xE/2)
K
B
N N-1
b
PIN 1 INDEX AREA
(D/2 xE/2)
aaa
C
2x
TOP VIEW
e
bbb
C A
(ND-1) X e
BTM VIEW
ddd
C
e
Terminal Tip
DETAIL B
ccc
C
C
C
SEATING
PLANE
0.08
SIDE VIEW
DatumA or B
ODD TERMINAL SIDE
Table 6. TDFN (3x3x0.8mm) 10-pin Package Dimensions
Symbol
A
Min
0.70
0.00
Typ
0.75
0.02
Max
0.80
0.05
Symbol
D BSC
E BSC
Min
Typ
3.00
3.00
Max
A1
2.20
1.40
0.30
0º
0.20
0.18
A3
L1
L2
aaa
bbb
ccc
ddd
eee
ggg
0.20 REF
D2
E2
L
θ
k
b
e
N
ND
2.70
1.75
0.50
0.03
0.15
0.13
0.40
0.15
0.10
0.10
0.05
0.08
0.10
0.25
0.50
10
0.30
5
Note:
1. Figure 37 is shown for illustration only.
2. N is the total number of terminals.
3. All dimensions are in millimeters, angle is in degrees.
4. Dimensioning and tolerancing conform to ASME Y14.5M-1994.
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AS1302
Datasheet - Package Drawings and Markings
Figure 38. WL-CSP 8-bumps Package Diagram
Bottom view
Ball side
Top throu
gh view
200
typ.
.
40 typ
20
350 typ.
205±20
1210±20.0
0
600±30
s:
Note
ccc Coplanarity
All dimensions in
µm
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AS1302
Datasheet - Ordering Information
11 Ordering Information
The device is available as the standard products shown in Table 7.
Table 7. Ordering Information
Ordering Code
Marking
Description
Delivery Form
Package
5V/30mA Adaptive Inductorless Boost
Converter
AS1302-BWLT
Tape and Reel
WL-CSP 8-bumps
ASQ7
5V/30mA Adaptive Inductorless Boost
Converter
TDFN (3x3x0.8mm)
10-pin
AS1302-BTDT
Tape and Reel
ASQ7
Note: All products are RoHS compliant and Pb-free.
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AS1302
Datasheet
Copyrights
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Trademarks Registered ®. All rights reserved. The material herein may not be reproduced, adapted, merged,
translated, stored, or used without the prior written consent of the copyright owner.
All products and companies mentioned are trademarks or registered trademarks of their respective companies.
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in its Term of Sale. austriamicrosystems AG makes no warranty, express, statutory, implied, or by description regarding
the information set forth herein or regarding the freedom of the described devices from patent infringement.
austriamicrosystems AG reserves the right to change specifications and prices at any time and without notice.
Therefore, prior to designing this product into a system, it is necessary to check with austriamicrosystems AG for
current information. This product is intended for use in normal commercial applications. Applications requiring
extended temperature range, unusual environmental requirements, or high reliability applications, such as military,
medical life-support or life-sustaining equipment are specifically not recommended without additional processing by
austriamicrosystems AG for each application. For shipments of less than 100 parts the manufacturing flow might show
deviations from the standard production flow, such as test flow or test location.
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austriamicrosystems AG rendering of technical or other services.
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Tobelbaderstrasse 30
A-8141 Unterpremstaetten, Austria
Tel: +43 (0) 3136 500 0
Fax: +43 (0) 3136 525 01
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