Operating Junction Temperature Range ...........-40
o
C to +125°C
Maximum 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)
40 TQFN-EP
Junction-to-Ambient Thermal Resistance (θ
JA
)...............27°C/W
Junction-to-Case Thermal Resistance (θ
JC
)......................1°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, T
A
= T
J
= +25°C.)
(Note 2)
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
FB_ to COMP_
Transconductance
COMP_ Output Swing
2
SYMBOL
CONDITIONS
MIN
5.5
TYP
MAX
23.0
5.5
UNITS
V
V
V
V
V
IN
V
UVLO
V
IN
= V
REG
= V
DREG_
(Note 3)
V
IN
rising
4.5
3.95
4.05
0.35
4.15
V
IN
= 12V, V
FB_
= 0.8V
V
IN
= 12V, V
EN_
= 0V, PGOOD_ unconnected
V
REG
V
IN
= 5.5V to 23V
I
REG
= 0 to 120mA, V
IN
= 12V
4.9
4.3
150
6.0
300
5.2
0.2
mA
µA
V
V
Clocks
Steps
2048
64
-250
V
FB
T
A
= T
J
= 0°C to +85°C
T
A
= T
J
= -40°C to +125°C
0.593
0.590
0.600
0.600
2.1
0.75
3.50
+250
0.605
0.608
nA
V
V
mS
V
Maxim Integrated
MAX15002
Dual-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, T
A
= T
J
= +25°C.)
(Note 2)
PARAMETER
Open-Loop Gain
Unity-Gain Bandwidth
DRIVERS
DL_, DH_ Break-Before-Make
Time
DH1 On-Resistance
DH2 On-Resistance
DL1 On-Resistance
DL2 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
EN1 Threshold
EN1 Threshold Hysteresis
EN1 Input Bias Current
PHASE Input High
PHASE Input Low
PHASE Input Bias Current
SEL Threshold
SEL Input Bias Current
-1
-1
-1
2
0.8
+1
20
+1
V
EN-TH
EN1 rising
1.19
1.215
0.12
+1
1.24
V
V
µA
V
V
µA
%V
REG
µA
N
CL
N
CLR
V
CSP_
= 0V, V
CSN_
= -0.3V
-20
8
3
4096
Clock
periods
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
288
20
3333
+20
300
54
312
mV
mV
µA
ppm/°C
µA
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
Sinking 10mA
20
0.9
1.3
0.9
1.3
0.9
1.3
0.9
1.3
8
ns
Ω
Ω
Ω
Ω
Ω
SYMBOL
CONDITIONS
MIN
TYP
80
10
MAX
UNITS
dB
MHz
Maxim Integrated
3
MAX15002
Dual-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, T
A
= T
J
= +25°C.)
(Note 2)
PARAMETER
PGOOD_,
RESET
OUTPUTS
FB_ for PGOOD_ Threshold
RESET,
PGOOD_ Output Low
Level
RESET,
PGOOD_ Leakage
CT Charging Current
CT Output Low
CT Threshold for
RESET
Delay
OSCILLATOR
Switching Frequency Range
(Each Converter)
Switching Frequency Accuracy
(Each Converter)
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-Peak)
PWM Ramp Valley
(Note 4)
50
0.4
30
30
2
1
100
V
RT
t
ON(MIN)
t
OFF(MIN)
2
0.8
200
4.6
f
SW
V
SYNC
= 0V, f
SW
= 1.5 x 10
11
/R
RT
+ 2k
f
SW
≤
1500kHz
f
SW
> 1500kHz
V
PHASE
= 0V (DH1 rising to DH2 rising)
V
PHASE
= V
REG
(DH1 rising to DH2 rising)
40kΩ < R
RT
< 500kΩ
200
-5
-7
180
0
2
75
150
2200
+5
+7
kHz
%
Degrees
Degrees
V
ns
ns
V
V
kΩ
MHz
ns
ns
V
V
Sinking 3mA
CT rising
CT falling
1.8
1.2
FB_ falling
Sinking 3mA
-1
1.8
2
0.54
0.555
0.57
0.1
+1
2.2
0.1
2.6
V
V
µA
µA
V
V
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Note 2:
100% production tested at T
A
= T
J
= +25°C and T
A
= T
J
= +125°C. Limits at other temperatures are guaranteed by design.
Note 3:
For 5V applications, connect REG directly to IN.
Note 4:
The switching frequency is 1/2 of the SYNC frequency.
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