IC CTRLR PWM STP-DN TRIPL 32WQFN

MAX15048ETJ+

Manufacturer Part NumberMAX15048ETJ+
DescriptionIC CTRLR PWM STP-DN TRIPL 32WQFN
ManufacturerMaxim Integrated Products
MAX15048ETJ+ datasheet
 


Specifications of MAX15048ETJ+

ApplicationsPower Supply Controller, SequencerVoltage - Supply4.7 V ~ 23 V
Current - Supply6mAOperating Temperature-40°C ~ 85°C
Mounting TypeSurface MountPackage / Case32-WQFN Exposed Pad
Number Of Outputs3Output Voltage5 V
Input Voltage4.7 V to 23 VSupply Current6 mA
Switching Frequency200 KHzMounting StyleSMD/SMT
Maximum Operating Temperature+ 85 CMinimum Operating Temperature- 40 C
Lead Free Status / RoHS StatusLead free / RoHS CompliantVoltage - Input-
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Triple-Output Buck Controllers
with Tracking/Sequencing
TOP VIEW
*EXPOSED PAD.
PIN
NAME
Oscillator Timing Resistor Connection. Connect a 15.6kI to 93.75kI resistor from RT to SGND to
1
RT
program the switching frequency from 200kHz to 1.2MHz.
Analog Ground. Connect SGND and PGND_ together at one point near the input bypass capacitor
2
SGND
return terminal.
Controller 2 Power Ground. Connect the input filter capacitor’s negative terminal, the source of the
3
PGND2
synchronous MOSFET, and the output filter capacitor’s return to PGND2.
4
DL2
Controller 2 Low-Side Gate-Driver Output. DL2 is the gate-driver output for the synchronous MOSFET.
Controller 2 Low-Side Gate-Driver Supply. Connect externally to REG through a 1I to 4.7I resistor.
5
DREG2
Connect a minimum of 0.22FF ceramic capacitor from DREG2 to PGND2.
Controller 2 High-Side MOSFET Source Connection/Synchronous MOSFET Drain Connection.
6
LX2
Connect the inductor and the negative side of the boost capacitor to LX2.
7
DH2
Controller 2 High-Side Gate-Driver Output. DH2 drives the gate of the high-side MOSFET.
8
BST2
Controller 2 High-Side Gate-Driver Supply. Connect a 0.1FF ceramic capacitor from BST2 to LX2.
Controller 2 Enable/Tracking Input. See Figure 2. When tracking (MAX15048), connect the same
resistive voltage-divider used for FB2 from output 1 to EN2 to SGND for coincident tracking. Connect
9
EN2
EN2 to analog ground for ratiometric tracking. When sequencing (MAX15049), EN2 must be above
0.6V for PWM controller 2 to start.
Controller 2 Feedback Regulation Point. Connect to the center tap of a resistive voltage-divider from
10
FB2
the converter output to SGND to set the output voltage. The FB2 voltage regulates to 0.6V (typ).
Controller 2 Transconductance Error-Amplifier Output. Connect COMP2 to the compensation
11
COMP2
feedback network of output 2.
10
_____________________________________________________________________________________
24
23
22
21
20
19
18
17
BST3
25
DH3
26
27
LX3
28
DREG3
MAX15048
DL3
29
MAX15049
PGND3
30
EP*
31
IN
+
32
REG
1
2
3
4
5
6
7
8
TQFN
(5mm × 5mm)
FUNCTION
Pin Configuration
16 BST1
15 EN1
14
FB1
13
COMP1
12
PGOOD
COMP2
11
10
FB2
9
EN2
Pin Description