Operating Junction Temperature Range ...........-40°C to +125°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-60°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
Soldering Temperature (reflow) .......................................+260°C
*As
per JEDEC51 standard (multilayer board).
Stresses beyond 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 in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
PACKAGE THERMAL CHARACTERISTICS (Note 1)
48 TQFN
Junction-to-Ambient Thermal Resistance (θ
JA
)...............26°C/W
Junction-to-Case Thermal Resistance (θ
JC
)......................1.3°C/W
Note 1:
Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-layer
board. For detailed information on package thermal considerations, refer to
www.maximintegrated.com/thermal-tutorial.
ELECTRICAL CHARACTERISTICS
(V
IN
= 5.5V to 23V or V
IN
= V
REG
= 4.5V to 5.5V, V
DREG
_ = V
REG
, V
PGND
_ = V
SYNC
= V
PHASE
= V
SEL
= 0V, C
REG
= 2.2µF, R
RT
=
100kΩ, C
CT
= 0.1µF, R
ILIM
_ = 60kΩ, T
A
= T
J
= -40°C to +125°C, unless otherwise noted. Typical values are at V
IN
= 12V and T
A
= T
J
= +25°C, unless otherwise noted.) (Note 1)
PARAMETER
SYSTEM SPECIFICATIONS
Input Voltage Range
Input Undervoltage Lockout
Threshold
Input Undervoltage Lockout
Hysteresis
Operating Supply Current
Shutdown Supply Current
REG VOLTAGE REGULATOR
Output-Voltage Setpoint
Load Regulation
DIGITAL SOFT-START/SOFT-STOP
Soft-Start/Soft-Stop Duration
Reference Voltage Steps
ERROR TRANSCONDUCTANCE AMPLIFIER
FB_, TRACK_ Input Bias Current
FB_ Voltage Setpoint
V
FB
T
A
= T
J
= 0°C to +85°C
T
A
= T
J
= -40°C to +125°C
-250
0.5945
0.590
0.6
0.6
+250
0.6065
0.608
nA
V
V
2048
64
Clocks
Steps
V
REG
V
IN
= 5.5V to 23V
I
REG
= 0 to 120mA, V
IN
= 12V
4.9
5.2
0.2
V
V
V
IN
= 12V, V
FB_
= 0.8V, no switching
V
IN
= 12V, EN_ = 0V, PGOOD_ unconnected
V
IN
V
UVLO
5.5
V
IN
= V
REG
= V
DREG_
(Note 2)
V
IN
rising
4.5
3.95
4.05
0.35
5
150
8
300
23.0
5.5
4.15
V
V
V
V
mA
µA
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
2
Maxim Integrated
MAX15003
Triple-Output Buck Controller with
Tracking/Sequencing
ELECTRICAL CHARACTERISTICS (continued)
(V
IN
= 5.5V to 23V or V
IN
= V
REG
= 4.5V to 5.5V, V
DREG
_ = V
REG
, V
PGND
_ = V
SYNC
= V
PHASE
= V
SEL
= 0V, C
REG
= 2.2µF, R
RT
=
100kΩ, C
CT
= 0.1µF, R
ILIM
_ = 60kΩ, T
A
= T
J
= -40°C to +125°C, unless otherwise noted. Typical values are at V
IN
= 12V and T
A
= T
J
= +25°C, unless otherwise noted.) (Note 1)
PARAMETER
FB_ to COMP_
Transconductance
COMP_ Output Swing
Open-Loop Gain
Unity-Gain Bandwidth
DRIVERS
DL_, DH_ Break-Before-Make
Time
DH1 On-Resistance
DH2 On-Resistance
DH3 On-Resistance
DL1 On-Resistance
DL2 On-Resistance
DL3 On Resistance
LX_ to PGND_ On-Resistance
CURRENT-LIMIT AND HICCUP MODE
Cycle-By-Cycle Valley Current-
Limit Adjustment Range
Cycle-By-Cycle Valley Current-
Limit Threshold Tolerance
ILIM_ Reference Current
ILIM_ Reference Current
Temperature Coefficient
CSP_, CSN_ Input Bias Current
Number of Cumulative Current-
Limit Events to Hiccup
Number of Consecutive Non-
Current-Limit Cycles to Clear N
CL
Hiccup Timeout
ENABLE/PHASE/SEL
EN_ Threshold
EN_ Threshold Hysteresis
EN_ Input Bias Current
Maxim Integrated
SYMBOL
CONDITIONS
MIN
TYP
2.1
MAX
UNITS
mS
0.75
80
10
3.50
V
dB
MHz
C
LOAD
= 5nF
Low, sinking 100mA
High, sourcing 100mA
Low, sinking 100mA
High, sourcing 100mA
Low, sinking 100mA
High, sourcing 100mA
Low, sinking 100mA
High, sourcing 100mA
Low, sinking 100mA
High, sourcing 100mA
Low, sinking 100mA
High, sourcing 100mA
Sinking 10mA
20
0.9
1.3
0.9
0.3
0.9
1.3
0.9
1.3
0.9
1.3
0.9
1.3
8
ns
Ω
Ω
Ω
Ω
Ω
Ω
Ω
V
CL
V
CL_
= V
ILIM_
/ 10
V
ILIM_
= 0.5V
V
ILIM_
= 3V
V
ILIM_
= 0 to 3V, T
A
= T
J
= +25°C
50
44
290
20
3333
300
54
310
mV
mV
µA
ppm/°C
V
CSP_
= 0V, V
CSN_
= -0.3V
N
CL
N
CLR
-20
8
3
4096
+20
µA
Clock
periods
1.24
+1
V
V
µA
3
V
EN–TH
EN_ rising
1.19
-1
1.215
0.12
MAX15003
Triple-Output Buck Controller with
Tracking/Sequencing
ELECTRICAL CHARACTERISTICS (continued)
(V
IN
= 5.5V to 23V or V
IN
= V
REG
= 4.5V to 5.5V, V
DREG
_ = V
REG
, V
PGND
_ = V
SYNC
= V
PHASE
= V
SEL
= 0V, C
REG
= 2.2µF, R
RT
=
100kΩ, C
CT
= 0.1µF, R
ILIM
_ = 60kΩ, T
A
= T
J
= -40°C to +125°C, unless otherwise noted. Typical values are at V
IN
= 12V and T
A
= T
J
= +25°C, unless otherwise noted.) (Note 1)
PARAMETER
PHASE Input Logic High
PHASE Input Logic Low
PHASE Input Bias Current
SEL High Threshold
SEL Low Threshold
SEL Input Bias Current
PGOOD,
RESET
OUTPUTS
FB_ For Threshold PGOOD_
RESET,
PGOOD_ Output Low
Level
RESET,
PGOOD_ Leakage
CT Charging Current
CT Pulldown Resistance
CT Threshold for
RESET
Delay
OSCILLATOR
Switching Frequency Range
(Each Converter)
Switching Frequency Accuracy
(Each Converter)
f
SW
V
SYNC
= 0V, f
CLK
= 10
11
/ (R
RT
+ 1.75kΩ)
f
SW
≤
1500kHz
f
SW
≥
1500kHz
V
PHASE
= 0V (DH1 rising to DH2 rising and
DH2 rising to DH3 rising)
V
PHASE
= V
REG
(DH1 rising to DH2 rising
and DH2 rising to DH3 rising)
V
RT
t
ON(MIN)
t
OFF(MIN)
2
0.8
50
(Note 3)
0.6
30
30
2
1
100
200
6.9
40kΩ < R
RT
< 500kΩ
200
-5
-7
120
0
2
75
150
2200
+5
+7
%
degrees
degrees
V
ns
ns
V
V
kΩ
MHz
ns
ns
V
V
kHz
Sinking 3mA
CT rising
CT failling
1.8
1.2
FB_ falling
Sinking 3mA
-1
1.8
2.0
0.540
0.555
0.570
0.1
+1
2.2
33
2.6
V
V
µA
µA
Ω
V
Present only during startup
-100
-1
80
20
+100
SYMBOL
CONDITIONS
MIN
2
0.8
+1
TYP
MAX
UNITS
V
V
µA
%V
REG
%V
REG
µA
Phase Delay
RT Voltage
Minimum Controllable On-Time
Minimum Off-Time
SYNC High-Level Voltage
SYNC Low-Level Voltage
SYNC Internal Pulldown Resistor
SYNC Frequency Range
SYNC Minimum On-Time
SYNC Minimum Off-Time
PWM Ramp Amplitude
(Peak-to-Peak)
PWM Ramp Valley
Note 1:
100% production tested at T
A
= T
J
= +25°C and T
A
= T
J
= +125°C. Limits at other temperature are guaranteed by design.
Note 2:
For 5V applications, connect REG directly to IN.
Note 3:
The switching frequency is 1/3 of the SYNC frequency.
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