AT1388/AT1388A
Preliminary Product Information
6-Channel DC-DC Controller for DSC
2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.
Tel: 886-3-563-0878 WWW: http://www.aimtron.com.tw
Fax: 886-3-563-0879 Email: service@aimtron.com.tw
1
Features
• Low start-up power supply voltage :1.4V(CH6)
• Wide supply voltage range from 2.5V to 6.5V
(CH1~6)
• High speed operation is possible: Maximum
1 MHz
• Supports for up, flyback and up/down SEPIC
conversion
(AT1388:CH2,3,4,5,6 AT1388A:CH2,3,4,6)
• Supports for down and up/down Zeta conversion
(AT1388:CH1 AT1388A:CH1,CH5 )
• Synchronized rectification on CH1,CH2
• Supports for inverting converter CH5
• Built-in On/Off function
• Built-in Soft-Start Function
• Built-in Short-Circuit Protection.
Applications
• Digital Cameras
• CCD Imaging Devices
• Camcorders
General Description
The AT1388/AT1388A is a 6-channel PWM
DC/DC control IC for low voltage applications
with a soft start function and short circuit detection
function. This IC is ideal for up conversion, down
conversion, and up/down conversion (using a step-
up/step-down SEPIC ,Zeta system with free input
and output settings). 6 channels can be built in the
LQFP48 package, each channel be controlled, and
soft-start.
The AT1388 include one comparator to generate
low-battery warning outputs. It also contains two
high efficiency topology by using synchronous
rectification PWM(It can be disable by floating
OUT1_2,OUT2_2.)
Pin Assignment
Ordering Information
Part Number Package Marking
AT1388F LQFP48 AT1388F
AT1388F_PBF LQFP48, PB-Free AT1388F,date code with one bottom line
AT1388F_GRE LQFP48,Green AT1388F,date code with two bottom line
AT1388AF LQFP48 AT1388AF
AT1388AF_PBF LQFP48, PB-Free AT1388AF,date code with one bottom line
AT1388AF_GRE LQFP48,Green AT1388AF,date code with two bottom line
Aimtron reserves the right without notice to change this circuitry and specifications.
AT1388/AT1388A
Preliminary Product Information
6-Channel DC-DC Controller for DSC
2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.
Tel: 886-3-563-0878 WWW: http://www.aimtron.com.tw
Fax: 886-3-563-0879 Email: service@aimtron.com.tw
2
Pin Description
Pin No. Pin name I/O Function
1 SS6 I CH6 Soft Start Setting Capacitor
2 FB6 I CH6 Error Amplifier Output
3 IN6 I CH6 Error Amplifier Inverted Input
4 DTC5 I CH5 Dead Time Control
5 SS5 I CH5 Soft Start Setting Capacitor
6 FB5 I CH5 Error Amplifier Output
7 IN5N I CH5 Error Amplifier Negative Input
8 IN5P I CH5 Error Amplifier Positive Input
9 DTC4 I CH4 Dead Time Control
10 SS4 I CH4 Soft Start Setting Capacitor
11 FB4 I CH4 Error Amplifier Output
12 IN4 I CH4 Error Amplifier Inverted Input
13 DTC3 I CH3 Dead Time Control
14 SS3 I CH3 Soft Start Setting Capacitor
15 FB3 I CH3 Error Amplifier Output
16 IN3 I CH3 Error Amplifier Inverted Input
17 CTL6 I CH6 ON/OFF Control Input
18 CTL5 I CH5 ON/OFF Control Input
19 VREG O 2.3V Regulator Output
20 AGND P Power Ground
21 VCC P Power Supply
22 CTL4 I CH4 ON/OFF Control Input
23 CT - Oscillation Frequency Setting Capacitor
24 CTL I Power Control Input
25 CSCP - Timer Latch Short-Circuit Detection Capacitor Input
26 CTL3 I CH3 ON/OFF Control Input
27 CTL2 I CH2 ON/OFF Control Input
28 CTL1 I CH1 ON/OFF Control Input
29 IN2 I CH2 Error Amplifier Inverted Input
30 FB2 I CH2 Error Amplifier Output
31 SS2 I CH2 Soft Start Setting Capacitor
32 DTC2 I CH2 Dead Time Control
33 IN1 I CH1 Error Amplifier Inverted Input
34 FB1 I CH1 Error Amplifier Output
35 SS1 I CH1 Soft Start Setting Capacitor
36 DTC1 I CH1 Dead Time Control
37 LBI I Low Battery Detector Input
38 LBO O Low Battery Indicator
39 OUT1_1 O CH1 Main Side Output
40 OUT1_2 O CH1 Synchronous Rectifier Side Output
41 OUT2_1 O CH2 Main Side Output
42 OUT2_2 O CH2 Synchronous Rectifier Side Output
43 PVCC P Drive Output Block Power Supply
44 PGND P Drive Output Block Ground
45 OUT3 O CH3 Output
46 OUT4 O CH4 Output
47 OUT5 O CH5 Output
*AT1388: Drive N-CH MOSFET
*AT1388A: Drive P-CH MOSFET
48 OUT6 O CH6 Output
AT1388/AT1388A
Preliminary Product Information
6-Channel DC-DC Controller for DSC
2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.
Tel: 886-3-563-0878 WWW: http://www.aimtron.com.tw
Fax: 886-3-563-0879 Email: service@aimtron.com.tw
3
Block Diagram
AT1388/AT1388A
Preliminary Product Information
6-Channel DC-DC Controller for DSC
2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.
Tel: 886-3-563-0878 WWW: http://www.aimtron.com.tw
Fax: 886-3-563-0879 Email: service@aimtron.com.tw
4
Absolute Maximum Ratings
Ratin
g
Parameter Symbol Condition Min Max Unit
Power supply voltage Vcc -- -- 6.5 V
Output current Io Output pin -- 30 mA
Output peak current Io Output pin, Duty≦5% -- 200 mA
Power dissipation PDTa≦25℃ (LQFP-48P) -- 860 mW
Operation temperature Topr -- -30 85 ℃
Storage temperature Tstg -- -55 125 ℃
*Semiconductor devices can be permanently damaged by application of stress in excess of absolute ratings. Do not exceed
these ratings.
Recommended Operating Conditions
Value
Parameter Symbol Condition
Min T
yp
Max
Unit
Startup power supply voltage Vcc CH6 1.4 -- 6.0 V
Power supply voltage Vcc CH1 to CH6 2.5 5.0 6.0 V
Regulator voltage output current IOR VREG pin -10 -- 0 mA
Input voltage VIN IN1 to IN6 pins 0 -- Vcc-1.8 V
Control input voltage VCTL CTL pin 0 -- 6.0 V
OUT pin (CH1 to CH5) -- 2 15 mA
Output current Io OUT pin (CH6) 1 2 15 mA
Oscillator fOSC -- 100 500 1000 kHz
Timing capacitor CT-- 47 82 560 pF
Cs CH1 to CH5 -- 0.1 1.0 μF
Soft start capacitor CSS6 CH6 -- 0.1 1.0 μF
Short detection capacitor CCSCP -- -- 0.1 1.0 μF
VREG pin capacitor CVREG -- 0.082 0.1 -- μF
AT1388/AT1388A
Preliminary Product Information
6-Channel DC-DC Controller for DSC
2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.
Tel: 886-3-563-0878 WWW: http://www.aimtron.com.tw
Fax: 886-3-563-0879 Email: service@aimtron.com.tw
5
Electrical Characteristics
(TA=25℃, VCC=PVCC=5V)
Measure result
Parameter Symbol Condition Min. T
yp
. Max. Unit
Reference voltage block [REF]
Regulator voltage VREG 2.25 2.30 2.35 V
Output voltage temperature
stability
△VREF
/VREF
TA = -30℃ to 85℃-0.5-%
Input stability Line VCC=2.5V to 6V -80 - 80 mV
Load stability Load VREG=0mA to –10mA -20 - 20 mV
Under voltage lockout block [U.V.L.O]
Threshold voltage(CH1~CH5) VTH 2.0 2.2 2.3 V
Hysteresis width(CH1~CH5) VH1_5 0.05 0.1 0.3 V
CH6 Pre-OSC change to Main-
OSC threshold VTH6 2.2 2.3 2.5 V
Hysteresis width(CH6 Pre-OSC
change to Main-OSC threshold) VH6 0.05 0.1 0.3 V
Pre-OSC frequency fPRE-OSC 320 400 480 KHz
Soft start block [CS]
Charge current ICS -1.5 -1.0 -0.7 μA
Valid Threshold voltage 0.3 - 0.8 V
Short circuit detection block [SCP]
Threshold voltage VTH 0.80 0.90 1.00 V
Input source current ICSCP -1.5 -1.0 -0.6 μA
Short detect comparator [SCP Comp]
Threshold voltage VTH CH1 to CH6 0.65 0.7 0.75 V
Input bias current IBIN=0V -320 -80 - nA
Triangular wave oscillator block [OSC]
Oscillator frequency fOSC CT=82pF 400 500 600 kHz
Frequency stability for voltage △f
/fdv VCC=2.5V to 6V - 1 10 %
Frequency stability for
temperature
△f
/fdt TA=-30℃ to 85℃-110%
Error amplifier block [Error Amp](CH1~CH6)
AT1388/AT1388A
Preliminary Product Information
6-Channel DC-DC Controller for DSC
2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.
Tel: 886-3-563-0878 WWW: http://www.aimtron.com.tw
Fax: 886-3-563-0879 Email: service@aimtron.com.tw
6
Threshold voltage VTH FB=IN 0.682 0.70 0.717 V
VTH temperature stability △VT/VTTA = -30℃ to 85℃-0.5-%
Input bias current IBIN=0.7V - 80 320 nA
Voltage gain AVDC - 100 - dB
Frequency bandwidth BW AV=0dB - 10 - MHz
VOH 0.9 1.0 1.2 V
Output voltage VOL -50200mV
Output source current ISOURCE FB=0.5V - -4.0 -1.0 mA
Output sink current ISINK FB=0.5V 70 140 - μA
Maximum Duty [CH6]
Maximum Duty Cycle DMAX 75 85 95 %
PWM Comp. [PWM Comp]
VT0 Duty = 0 % 0.25 0.3 - V
Threshold voltage(CH1~6)
VTmax Duty = 100 % - 0.80 0.85 V
Input current IDTC DTC=0.5V -1.0 -0.3 - μA
Output block (CH1 to CH5) [Pin 39,41,45,46,47]
Output source current ISOURCE OUT=1/2VCC - -130 -80 mA
Output sink current ISINK OUT=1/2VCC 65 100 - mA
ROH OUT = -15mA - 10 25 Ω
Output ON resistor
ROL OUT = 15mA - 10 25 Ω
Output block (CH1,2 ) [Pin 40,42]
Output source current ISOURCE OUT=1/2VCC - -130 -80 mA
Output sink current ISINK OUT=1/2VCC 65 100 - mA
ROH OUT = -15mA - 10 25 Ω
Output ON resistor
ROL OUT = 15mA - 10 25 Ω
Output block (CH6) [Pin 48]
Output source current ISOURCE OUT=1/2VCC - -260 -160 mA
Output sink current ISINK OUT=1/2VCC 130 200 - mA
ROH OUT = -15mA - 10 25 Ω
Output ON resistor ROL OUT = 15mA - 10 25 Ω
Control block [CTL]
VIH Active mode 1.3 - VCC V
CTL input voltage VIL Standby mode 0 - 0.7 V
VIH Active mode 1.3 - VCC V
CTL1 to CTL6 input voltage VIL Standby mode 0 - 0.7 V
AT1388/AT1388A
Preliminary Product Information
6-Channel DC-DC Controller for DSC
2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.
Tel: 886-3-563-0878 WWW: http://www.aimtron.com.tw
Fax: 886-3-563-0879 Email: service@aimtron.com.tw
7
Input current ICTL CTL = 5V - 5 20 μA
Low battery detect block [LBI, LBO]
LBI detect threshold 1.20 1.22 1.24 V
Detect Hysteresis -50 +50 mV
LBO output voltage low Isink=1mA - - 0.4 V
LBO output high leakage VLBO=5V -0.011
μA
General(Output no Load)
Icss
CTL=CTL1=CTL2=CTL
3=CTL4=CTL5=CTL6=0
V
-110
μA
Standby current
Icss(o)
CTL=0V,
CTL1=CTL2=CTL3=CT
L4=CTL5=CTL6="H"
-200250
μA
Power supply current Icc1
CTL=CTL1=CTL2=CTL
3=CTL4=CTL5=CTL6="
H"
-57mA
Power supply current Icc2
CTL=”H”
CTL1=CTL2=CTL3=CT
L4=CTL5=CTL6="L"
-22.5mA
AT1388/AT1388A
Preliminary Product Information
6-Channel DC-DC Controller for DSC
2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.
Tel: 886-3-563-0878 WWW: http://www.aimtron.com.tw
Fax: 886-3-563-0879 Email: service@aimtron.com.tw
8
Application Circuit (2 Cell Battery 1.5V~3.4V input)
AT1388/AT1388A
Preliminary Product Information
6-Channel DC-DC Controller for DSC
2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.
Tel: 886-3-563-0878 WWW: http://www.aimtron.com.tw
Fax: 886-3-563-0879 Email: service@aimtron.com.tw
9
AT1388/AT1388A
Preliminary Product Information
6-Channel DC-DC Controller for DSC
2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.
Tel: 886-3-563-0878 WWW: http://www.aimtron.com.tw
Fax: 886-3-563-0879 Email: service@aimtron.com.tw
10
AT1388/AT1388A
Preliminary Product Information
6-Channel DC-DC Controller for DSC
2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.
Tel: 886-3-563-0878 WWW: http://www.aimtron.com.tw
Fax: 886-3-563-0879 Email: service@aimtron.com.tw
11
Application Circuit (2 Cell Battery 1.5V~3.4V input)
AT1388/AT1388A
Preliminary Product Information
6-Channel DC-DC Controller for DSC
2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.
Tel: 886-3-563-0878 WWW: http://www.aimtron.com.tw
Fax: 886-3-563-0879 Email: service@aimtron.com.tw
12
AT1388/AT1388A
Preliminary Product Information
6-Channel DC-DC Controller for DSC
2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.
Tel: 886-3-563-0878 WWW: http://www.aimtron.com.tw
Fax: 886-3-563-0879 Email: service@aimtron.com.tw
13
AT1388/AT1388A
Preliminary Product Information
6-Channel DC-DC Controller for DSC
2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.
Tel: 886-3-563-0878 WWW: http://www.aimtron.com.tw
Fax: 886-3-563-0879 Email: service@aimtron.com.tw
14
Function Description
1. Power Converter Functions
＊ Reference voltage block
The reference voltage circuit generates a temperature independence voltage
(typical=2.3V) from the power source, which is used as reference voltage for the
IC’s internal circuitry and supply load current above 10mA to external device.
＊ Triangular oscillator block
The triangular wave oscillator is generated by timing capacitor(CT) to incorporate
each other. The waveforms CT (amplitude of 0.3V to 0.8V), CTP (amplitude
0.3V to 0.8V in phase with CT) and CTN (amplitude 0.3V to 0.8V in inverse
phase with CT) are input to the PWM comparator.
＊ Error amplifier block
The error amplifier outputs controlling error signal to PWM comparator from
sensing DC/DC converter output voltage. In addition, an arbitrary loop gain can
be set by connecting feedback resistor and capacitor from the output pin to
inverted input pin of the error amplifier, in order to make a stable system.
＊ CH5 Inverting amplifier block
The inverting amplifier detects the DC/DC converter output voltage (negative)
and outputs a control signal to the error amplifier.
＊ PWM comparator block
The PWM comparator is a voltage-to-pulse width converter for controlling the
duty cycle of DC/DC converter.
Channels 1, 2 main sides, channel 3, 4, 5, and 6 : The comparator keeps the
output transistor turn on while the error amplifier output voltage and DTC voltage
still higher than the triangular wave voltage.
Channels 1, 2 synchronous rectification sides : The comparator keeps the output
transistor turn on while the error amplifier output voltage still lower than the
triangular wave voltage.
AT1388/AT1388A
Preliminary Product Information
6-Channel DC-DC Controller for DSC
2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.
Tel: 886-3-563-0878 WWW: http://www.aimtron.com.tw
Fax: 886-3-563-0879 Email: service@aimtron.com.tw
15
＊ Output block
The output block is the totem pole configuration, which could drive external
MOSFET or transistor.
2. Channel Control Function
The channels are turned on and turned off depending on the voltage levels at the
CTL, CTL12, CTL3, CTL4, CTL5, and CTL6. Described as follow.
CTL L H
CTL1XHZZZZZ
CTL2 X Z H Z Z Z Z
CTL3 X Z Z H Z Z Z
CTL4 X Z Z Z H Z Z
CTL5 X Z Z Z Z H Z
CTL6XZZZZZH
CH1 ON OFF OFF OFF OFF OFF
CH2 OFF ON OFF OFF OFF OFF
CH3 OFF OFF ON OFF OFF OFF
CH4 OFF OFF OFF ON OFF OFF
CH5 OFF OFF OFF OFF ON OFF
CH6
OFF
OFF OFF OFF OFF OFF ON
X : Don’t care Z: Low or Floating
3. Protective Functions
＊ Short circuit protection and timer latch
The short circuit detection comparator in each channel detects the output voltage
level of power converter. When the output voltage falls below the short
detection level, there is a constant current bias charging the external capacitor
CCSCP which connected to the CSCP pin until the capacitor voltage level reaches
about 0.7V then disable the IC. It could reset the actuated protection by restart
the power source or pull CTL from low to high.
＊ Under-voltage lockout protection
The under-voltage lockout protection is to disable the IC while the supply voltage
transient or momentary decrease, which may cause the IC to malfunction. To
prevent such malfunctions, the under-voltage lockout protection circuit detects a
decrease in internal reference voltage with respect to the power supply voltage,
turns off the output transistor, and holding the CSCP pin at the “L” level.
AT1388/AT1388A
Preliminary Product Information
6-Channel DC-DC Controller for DSC
2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.
Tel: 886-3-563-0878 WWW: http://www.aimtron.com.tw
Fax: 886-3-563-0879 Email: service@aimtron.com.tw
16
＊ Battery Low Detect Function
The Battery low comparator open-drain output LBO sinks up to 1mA if the LBI
input is below its threshold voltage. Connect LBO to power source with a
100KΩ~1MΩ pull-up resistor.
4. Negative Voltage Feedback
AT1388/AT1388A
Preliminary Product Information
6-Channel DC-DC Controller for DSC
2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.
Tel: 886-3-563-0878 WWW: http://www.aimtron.com.tw
Fax: 886-3-563-0879 Email: service@aimtron.com.tw
17
5. Soft Start Operation
＊ The CTL, CTL1,2, CTL3, CTL4, CTL5 and CTL6 terminals are driven high level
at the same time. The driving scheme is described as follow diagram.
AT1388/AT1388A
Preliminary Product Information
6-Channel DC-DC Controller for DSC
2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.
Tel: 886-3-563-0878 WWW: http://www.aimtron.com.tw
Fax: 886-3-563-0879 Email: service@aimtron.com.tw
18
＊ After CTL ON, driving the CTL1, CTL2, CTL3, CTL4, CTL5 and CTL6 to high
level. The driving scheme is described as follow diagram.
AT1388/AT1388A
Preliminary Product Information
6-Channel DC-DC Controller for DSC
2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.
Tel: 886-3-563-0878 WWW: http://www.aimtron.com.tw
Fax: 886-3-563-0879 Email: service@aimtron.com.tw
19
＊ Soft start setting (CH1~6)
Consider the input voltage and load current to design the capacitor connected to
the SS pin.
It can calculate the CH1~6 soft start time Ts(s)(valid threshold 0.3~0.8V interval).
Note : It could be disabled soft start function by floating SS pin.
Determine the triangular Oscillator Frequency
The triangular oscillator frequency is determined by the timing capacitor (CT). It is
difficult to incorporate these non-linear characteristics into the equation. This
difference is caused by characteristics, such as changes in the maximum voltage
amplitude of the sawtooth waveform with the CT value and the circuit delay causing
the maximum amplitude to become large in the case of a high oscillating frequency
even for the same capacitor. In practical use, therefore, the user should read the CT
values from the characteristic curve or should determine an approximate target value
by using the equation.
I
t
V
C=
∆
∆
×
)(5.0)( FCsTs
µ
×
=
)(
41000
)( pFC
KHzf
T
OSC =
AT1388/AT1388A
Preliminary Product Information
6-Channel DC-DC Controller for DSC
2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.
Tel: 886-3-563-0878 WWW: http://www.aimtron.com.tw
Fax: 886-3-563-0879 Email: service@aimtron.com.tw
20
Design the DC/DC Output Voltage
＊ CH1~6
Setting Time Period When Short Circuit Protection
The CSCP comparator detects each channel output voltage while the power
converter work at normal condition. At the same time, the voltage level of CSCP
pin is held at low level. If the output load of these converters rapidly
malfunction or short, causing the output voltage to drop, the CSCP comparator
detects that to enable short circuit protection. The time period when short circuit
protection show as follow equation.
Short detection time (TPE(s))
T
PE(s) = 0.7 * CCSCP (μF)
Note : It could be disabled short circuit protection function by connecting CSCP
pin into the ground.
AT1388/AT1388A
Preliminary Product Information
6-Channel DC-DC Controller for DSC
2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.
Tel: 886-3-563-0878 WWW: http://www.aimtron.com.tw
Fax: 886-3-563-0879 Email: service@aimtron.com.tw
21
Setting the Dead Time Control Level
When using Boost, SEPIC, Zeta or flyback DC/DC converter, it must prevent that
output transistor works at full-ON state (ON duty = 100%). To prevent this
situation, set the maximum duty of these channels. The dead time control circuit
is implemented as below. When the voltage at the DTC pin is higher than the
triangular wave voltage (CT, CTP, CTN), the output transistor is turned on. The
maximum duty calculation formula assuming that triangular wave amplitude =
0.5V and triangular wave minimum voltage = 0.3V.
Note 1 : The circuit is suitable at CH1 to CH5.
Note 2 : Shorting DTC and VREG to disable dead time control function.
%100)
5.0
3.0
(
.×
−
=Vd
DutyMAX
AT1388/AT1388A
Preliminary Product Information
6-Channel DC-DC Controller for DSC
2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.
Tel: 886-3-563-0878 WWW: http://www.aimtron.com.tw
Fax: 886-3-563-0879 Email: service@aimtron.com.tw
22
Typical Characteristics
AT1388/AT1388A
Preliminary Product Information
6-Channel DC-DC Controller for DSC
2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.
Tel: 886-3-563-0878 WWW: http://www.aimtron.com.tw
Fax: 886-3-563-0879 Email: service@aimtron.com.tw
23
AT1388/AT1388A
Preliminary Product Information
6-Channel DC-DC Controller for DSC
2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.
Tel: 886-3-563-0878 WWW: http://www.aimtron.com.tw
Fax: 886-3-563-0879 Email: service@aimtron.com.tw
24
Package Outline
LQFP48
AT1388/AT1388A
Preliminary Product Information
6-Channel DC-DC Controller for DSC
2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.
Tel: 886-3-563-0878 WWW: http://www.aimtron.com.tw
Fax: 886-3-563-0879 Email: service@aimtron.com.tw
25
Reflow Condition
1.Infrared-Ray Reflow
2.Infrared-Ray Reflow(Pb-free)
