MAX15034 Datasheet, PDF (2/25 Pages) Maxim Integrated Products – Configurable, Single-/Dual-Output, Synchronous Buck Controller for High-Current Applications

Configurable, Single-/Dual-Output, Synchronous
Buck Controller for High-Current Applications
ABSOLUTE MAXIMUM RATINGS
IN, LX_ to AGND.....................................................-0.3V to +30V
BST_ to AGND........................................................-0.3V to +35V
DH_ to LX_ ....................................-0.3V to (V_{BST_} - V_{LX_}) + 0.3V
DL_ to PGND ..............................................-0.3V to (V_DD + 0.3V)
BST_ to LX_ ..............................................................-0.3V to +6V
V_DD to PGND............................................................-0.3V to +6V
AGND to PGND .....................................................-0.3V to +0.3V
AVGLIMIT, REG, RT/CLKIN, CSP_,
CSN_ to AGND ......................................................-0.3V to +6V
All Other Pins to AGND ............................-0.3V to (V_REG + 0.3V)
REG Continuous Output Current
(limited by power dissipation, no thermal or short-circuit
protection).........................................................................67mA
Continuous Power Dissipation (T_A = +70°C) (Note 1)
28-Pin TSSOP (derate 14mW/°C above +70°C) ..........1117mW
28-Pin TSSOP-EP (derate 27mW/°C above +70°C)........2162mW
Package Thermal Resistance (θ_JA) (Note 1)
MAX15034A ................................................................71.6°C/W
MAX15034B ...................................................................37°C/W
Package Thermal Resistance (θ_JC) (Note 1)
MAX15034A ...................................................................13°C/W
MAX15034B .....................................................................2°C/W
Operating Temperature Range .........................-40°C to +125°C
Maximum Junction Temperature .....................................+150°C
Storage Temperature Range .............................-60°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
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.maxim-ic.com/thermal-tutorial.
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.
ELECTRICAL CHARACTERISTICS
(V_IN = V_REG = V_DD = V_{EN_} = +5V, T_A = T_J = T_MIN to T_MAX, unless otherwise noted, circuit of Figure 6. Typical values are at T_A = +25°C.)
(Note 2)
PARAMETER
SYSTEM SPECIFICATIONS
SYMBOL
CONDITIONS
Input Voltage Range
V_IN
IN and REG shorted together for +5V
operation
Quiescent Supply Current
I_IN
f_OSC = 500kHz, DH_ or DL_ = open
STARTUP/INTERNAL REGULATOR OUTPUT (REG)
REG Undervoltage Lockout
Hysteresis
REG Output Accuracy
REG Dropout
INTERNAL REFERENCE
UVLO
V_HYST
V_REG rising
V_IN = 5.8V to 28V, I_SOURCE = 0 to 65mA
V_IN < 5.8V, I_SOURCE = 60mA
Internal Reference Voltage
V_{EAN_}
EAN_ connected to
EAOUT_
(Note 3)
T_A = -40°C to +125°C
MIN
5
4.75
4.0
4.75
0.605
TYP
7
4.15
200
5.10
0.6125
MAX
28
5.50
17
4.5
5.30
0.5
0.620
UNITS
V
mA
V
mV
V
V
V
Digital Ramp Period for Soft-Start
Soft-Start Voltage Steps
MOSFET DRIVERS
p-Channel Output Driver
Impedance
R_{ON_P}
1024
64
Clock
cycles
Steps
1.35
3
Ω
n-Channel Output Driver
Impedance
Output Driver Source Current
Output Driver Sink Current
R_{ON_N}
I_{DH_}, I_{DL_}
I_{DH_}, I_{DL_}
0.45 1.35
Ω
2.5
A
5
A
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