MAX5072ETJ+ Maxim Integrated Products, MAX5072ETJ+ Datasheet - Page 22

• Manufacturer Part Number: MAX5072ETJ+
• Description: IC CONV BUCK/BOOST 32-TQFN
• Manufacturer: Maxim Integrated Products
• Type: Step-Down (Buck), Step-Up (Boost)r

Specifications of MAX5072ETJ+

• Internal Switch(s): Yes
• Synchronous Rectifier: No
• Number Of Outputs: 2
• Voltage - Output: 0.8 ~ 28 V
• Current - Output: 1A, 2A
• Frequency - Switching: 200kHz ~ 2.2MHz
• Voltage - Input: 4.5 ~ 23 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 32-TQFN Exposed Pad
• Power - Output: 2.76W
• Output Voltage: 5.2 V
• Output Current: 2 A
• Input Voltage: 5.5 V to 23 V
• Supply Current: 2.2 mA
• Switching Frequency: 1250 KHz
• Mounting Style: SMD/SMT
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

2.2MHz, Dual-Output Buck or Boost
Converter with POR and Power-Fail Output
Calculate the unity-gain crossover frequency as:
Figure 9. Buck-Boost Application
22
OUTPUT
2.5V/1A
______________________________________________________________________________________
V
IN
SGND
= 5.5V TO 23V
f
f
ZERO ESR
LC
=
PGND
2
,
π
f
C
×
PFO
VL
=
=
L
VL
f
OUT
SW
20
2
DYING GASP
CLOCK
π
1
OUT
OFF
×
×
ON
ESR
C
OUT
1
×
1
2
3
4
5
6
7
8 PFO
C
OUT
CLKOUT
BST2/VDD2
DRAIN2
DRAIN2
EN2
FB2
COMP2
SYSTEM
CLOCK
32
9
31
10
EP
11
30
MAX5072
SGND*
*CONNECT PGND AND SGND TOGETHER AT ONE POINT NEAR THE
12
29
RETURN TERMINALS OF THE V+ AND VL BYPASS CAPACITORS.
13
28
PGOOD1
If the f
Type II compensation network where R
midband zero f
quency pole.
Calculate modulator gain G
where V
to 1V.
14
27
15
26
BST1/VDD1
G
ZERO,ESR
M
DRAIN1
DRAIN1
COMP1
FSEL1
16
25
OSC
=
EN1
FB1
RST
V
OSC
24
23
22
21
20
19
18
17
V
is a peak-to-peak ramp amplitude equal
IN
mid,zero
is lower than f
×
µP RESET INPUT
ESR
VOUT1
, and R
VL
ON
+
OFF
M
2
π
at the crossover frequency.
ESR
F
C
×
C
f
and close to f
CF
C
VL
×
provides a high-fre-
L
OUT
F
C
F
×
provides a
V
LC
0 8
OUT
OUTPUT
3.3V/2A
.
, use a