ETC AT1388A

AT1388/AT1388A
Preliminary Product Information
6-Channel DC-DC Controller for DSC
Features
General Description
• 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.
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 stepup/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.)
Applications
• Digital Cameras
• CCD Imaging Devices
• Camcorders
Pin Assignment
Ordering Information
Part Number
AT1388F
AT1388F_PBF
AT1388F_GRE
AT1388AF
AT1388AF_PBF
AT1388AF_GRE
Package
LQFP48
LQFP48, PB-Free
LQFP48,Green
LQFP48
LQFP48, PB-Free
LQFP48,Green
Marking
AT1388F
AT1388F,date code with one bottom line
AT1388F,date code with two bottom line
AT1388AF
AT1388AF,date code with one bottom line
AT1388AF,date code with two bottom line
Aimtron reserves the right without notice to change this circuitry and specifications.
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
AT1388/AT1388A
Preliminary Product Information
6-Channel DC-DC Controller for DSC
Pin Description
Pin No. Pin name
I/O
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
SS6
FB6
IN6
DTC5
SS5
FB5
IN5N
IN5P
DTC4
SS4
FB4
IN4
DTC3
SS3
FB3
IN3
CTL6
CTL5
VREG
AGND
VCC
CTL4
CT
CTL
CSCP
CTL3
CTL2
CTL1
IN2
FB2
SS2
DTC2
IN1
FB1
SS1
DTC1
LBI
LBO
OUT1_1
OUT1_2
OUT2_1
OUT2_2
PVCC
PGND
OUT3
OUT4
OUT5
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
O
P
P
I
I
I
I
I
I
I
I
I
I
I
I
I
I
O
O
O
O
O
P
P
O
O
O
48
OUT6
O
Function
CH6 Soft Start Setting Capacitor
CH6 Error Amplifier Output
CH6 Error Amplifier Inverted Input
CH5 Dead Time Control
CH5 Soft Start Setting Capacitor
CH5 Error Amplifier Output
CH5 Error Amplifier Negative Input
CH5 Error Amplifier Positive Input
CH4 Dead Time Control
CH4 Soft Start Setting Capacitor
CH4 Error Amplifier Output
CH4 Error Amplifier Inverted Input
CH3 Dead Time Control
CH3 Soft Start Setting Capacitor
CH3 Error Amplifier Output
CH3 Error Amplifier Inverted Input
CH6 ON/OFF Control Input
CH5 ON/OFF Control Input
2.3V Regulator Output
Power Ground
Power Supply
CH4 ON/OFF Control Input
Oscillation Frequency Setting Capacitor
Power Control Input
Timer Latch Short-Circuit Detection Capacitor Input
CH3 ON/OFF Control Input
CH2 ON/OFF Control Input
CH1 ON/OFF Control Input
CH2 Error Amplifier Inverted Input
CH2 Error Amplifier Output
CH2 Soft Start Setting Capacitor
CH2 Dead Time Control
CH1 Error Amplifier Inverted Input
CH1 Error Amplifier Output
CH1 Soft Start Setting Capacitor
CH1 Dead Time Control
Low Battery Detector Input
Low Battery Indicator
CH1 Main Side Output
CH1 Synchronous Rectifier Side Output
CH2 Main Side Output
CH2 Synchronous Rectifier Side Output
Drive Output Block Power Supply
Drive Output Block Ground
CH3 Output
CH4 Output
CH5 Output
*AT1388: Drive N-CH MOSFET
*AT1388A: Drive P-CH MOSFET
CH6 Output
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
AT1388/AT1388A
Preliminary Product Information
6-Channel DC-DC Controller for DSC
Block Diagram
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
AT1388/AT1388A
Preliminary Product Information
6-Channel DC-DC Controller for DSC
Absolute Maximum Ratings
Parameter
Symbol
Condition
Vcc
--
Power supply voltage
Rating
Min
Max
Unit
--
6.5
V
Output current
Io
Output pin
--
30
mA
Output peak current
Io
Output pin, Duty≦5%
--
200
mA
Power dissipation
PD
Ta≦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
Unit
Min
Typ
Max
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
OUT pin (CH6)
1
2
15
mA
Output current
Io
Oscillator
fOSC
--
100
500
1000
kHz
Timing capacitor
CT
--
47
82
560
pF
Cs
CH1 to CH5
--
0.1
1.0
μF
CSS6
CH6
--
0.1
1.0
μF
Soft start capacitor
Short detection capacitor
CCSCP
--
--
0.1
1.0
μF
VREG pin capacitor
CVREG
--
0.082
0.1
--
μF
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
AT1388/AT1388A
Preliminary Product Information
6-Channel DC-DC Controller for DSC
Electrical Characteristics
(TA=25℃, VCC=PVCC=5V)
Parameter
Symbol
Condition
Measure result
Unit
Min. Typ. Max.
Reference voltage block [REF]
Regulator voltage
Output voltage temperature
stability
VREG
△VREF
TA = -30℃ to 85℃
/VREF
2.25
2.30
2.35
V
-
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 MainOSC 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
fPRE-OSC
320
400
480
KHz
ICS
-1.5
-1.0
-0.7
μA
0.3
-
0.8
V
Pre-OSC frequency
Soft start block [CS]
Charge current
Valid Threshold voltage
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
CH1 to CH6
0.65
0.7
0.75
V
IN=0V
-320
-80
-
nA
400
500
600
kHz
Short detect comparator [SCP Comp]
Threshold voltage
VTH
Input bias current
IB
Triangular wave oscillator block [OSC]
Oscillator frequency
fOSC
CT=82pF
Frequency stability for voltage
△f
/fdv
VCC=2.5V to 6V
-
1
10
%
Frequency stability for
temperature
△f
/fdt
TA=-30℃ to 85℃
-
1
10
%
Error amplifier block [Error Amp](CH1~CH6)
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
AT1388/AT1388A
Preliminary Product Information
6-Channel DC-DC Controller for DSC
Threshold voltage
VTH temperature stability
VTH
FB=IN
△VT/VT TA = -30℃ to 85℃
0.682
0.70
0.717
V
-
0.5
-
%
Input bias current
IB
IN=0.7V
-
80
320
nA
Voltage gain
AV
DC
-
100
-
dB
Frequency bandwidth
BW
AV=0dB
-
10
-
MHz
VOH
0.9
1.0
1.2
V
VOL
-
50
200
mV
-
-4.0
-1.0
mA
70
140
-
μA
75
85
95
%
0.25
0.3
-
V
-
0.80
0.85
V
-1.0
-0.3
-
μA
-
-130
-80
mA
Output voltage
Output source current
ISOURCE FB=0.5V
Output sink current
ISINK
FB=0.5V
Maximum Duty [CH6]
Maximum Duty Cycle
DMAX
PWM Comp. [PWM Comp]
VT0
Threshold voltage(CH1~6)
Input current
Duty = 0 %
VTmax
Duty = 100 %
IDTC
DTC=0.5V
Output block (CH1 to CH5) [Pin 39,41,45,46,47]
Output source current
ISOURCE OUT=1/2VCC
Output sink current
Output ON resistor
ISINK
OUT=1/2VCC
65
100
-
mA
ROH
OUT = -15mA
-
10
25
Ω
ROL
OUT = 15mA
-
10
25
Ω
-
-130
-80
mA
Output block (CH1,2 ) [Pin 40,42]
Output source current
Output sink current
Output ON resistor
ISOURCE OUT=1/2VCC
ISINK
OUT=1/2VCC
65
100
-
mA
ROH
OUT = -15mA
-
10
25
Ω
ROL
OUT = 15mA
-
10
25
Ω
-
-260
-160
mA
Output block (CH6) [Pin 48]
Output source current
Output sink current
Output ON resistor
ISOURCE OUT=1/2VCC
ISINK
OUT=1/2VCC
130
200
-
mA
ROH
OUT = -15mA
-
10
25
Ω
ROL
OUT = 15mA
-
10
25
Ω
VIH
Active mode
1.3
-
VCC
V
VIL
Standby mode
0
-
0.7
V
VIH
Active mode
1.3
-
VCC
V
VIL
Standby mode
0
-
0.7
V
Control block [CTL]
CTL input voltage
CTL1 to CTL6 input voltage
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
AT1388/AT1388A
Preliminary Product Information
6-Channel DC-DC Controller for DSC
Input current
ICTL
CTL = 5V
-
5
20
μA
Low battery detect block [LBI, LBO]
LBI detect threshold
VTHLBI Rising
1.2397 1.2650 1.2903
V
LBO output voltage low
Isink=1mA
-
-
0.4
V
LBO output high leakage
VLBO=5V
-
0.01
1
μA
-
1
10
μA
-
200
250
μA
-
5
7
mA
-
2
2.5
mA
General(Output no Load)
CTL=CTL1=CTL2=CTL
3=CTL4=CTL5=CTL6=0
V
CTL=0V,
Icss(o) CTL1=CTL2=CTL3=CT
L4=CTL5=CTL6="H"
CTL=CTL1=CTL2=CTL
Icc1 3=CTL4=CTL5=CTL6="
H"
CTL=”H”
Icc2 CTL1=CTL2=CTL3=CT
L4=CTL5=CTL6="L"
Icss
Standby current
Power supply current
Power supply current
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
AT1388/AT1388A
Preliminary Product Information
6-Channel DC-DC Controller for DSC
Application Circuit (2 Cell Battery 1.5V~3.4V input)
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
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
Application Circuit (2 Cell Battery 1.5V~3.4V input)
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
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
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.
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
AT1388/AT1388A
Preliminary Product Information
6-Channel DC-DC Controller for DSC
*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
CTL1
CTL2
CTL3
CTL4
CTL5
CTL6
CH1
CH2
CH3
CH4
CH5
CH6
L
X
X
X
X
X
X
OFF
X : Don’t care
H
H
Z
Z
Z
Z
Z
ON
OFF
OFF
OFF
OFF
OFF
Z
H
Z
Z
Z
Z
OFF
ON
OFF
OFF
OFF
OFF
Z
Z
H
Z
Z
Z
OFF
OFF
ON
OFF
OFF
OFF
Z
Z
Z
H
Z
Z
OFF
OFF
OFF
ON
OFF
OFF
Z
Z
Z
Z
H
Z
OFF
OFF
OFF
OFF
ON
OFF
Z
Z
Z
Z
Z
H
OFF
OFF
OFF
OFF
OFF
ON
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.
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
AT1388/AT1388A
Preliminary Product Information
6-Channel DC-DC Controller for DSC
*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
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
AT1388/AT1388A
Preliminary Product Information
6-Channel DC-DC Controller for DSC
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.
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
AT1388/AT1388A
Preliminary Product Information
6-Channel DC-DC Controller for DSC
*After CTL ON, driving the CTL1, CTL2, CTL3, CTL4, CTL5 and CTL6 to high
level. The driving scheme is described as follow diagram.
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
AT1388/AT1388A
Preliminary Product Information
6-Channel DC-DC Controller for DSC
*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).
C×
∆V
=I
∆t
Ts( s ) = 0.5 × C ( µF )
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.
f OSC ( KHz ) =
41000
CT ( pF )
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
AT1388/AT1388A
Preliminary Product Information
6-Channel DC-DC Controller for DSC
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))
TPE(s) = 0.7 * CCSCP (μF)
Note : It could be disabled short circuit protection function by connecting CSCP
pin into the ground.
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
AT1388/AT1388A
Preliminary Product Information
6-Channel DC-DC Controller for DSC
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.
Duty MAX . = (
Vd − 0.3
) × 100%
0.5
Note 1 : The circuit is suitable at CH1 to CH5.
Note 2 : Shorting DTC and VREG to disable dead time control function.
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
AT1388/AT1388A
Preliminary Product Information
6-Channel DC-DC Controller for DSC
Typical Characteristics
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
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
Package Outline
LQFP48
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