MAX1536ETI+ Maxim Integrated Products, MAX1536ETI+ Datasheet - Page 10

• Manufacturer Part Number: MAX1536ETI+
• Description: IC PWM STEP-DN DC-DC CONV 28TQFN
• Manufacturer: Maxim Integrated Products
• Type: Step-Down (Buck), PWM - Current Moder

Specifications of MAX1536ETI+

• Internal Switch(s): Yes
• Synchronous Rectifier: Yes
• Number Of Outputs: 1
• Voltage - Output: 0.7 ~ 5.5 V
• Current - Output: 3.6A
• Frequency - Switching: 1.4MHz
• Voltage - Input: 3 ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: *
• Package / Case: 28-TQFN Exposed Pad
• Voltage - Supply: 3 V ~ 5.5 V
• Frequency-max: 1.4MHz
• Duty Cycle: 100%
• Pwm Type: Current Mode
• Buck: Yes
• Boost: No
• Flyback: No
• Inverting: No
• Doubler: No
• Divider: No
• Cuk: No
• Isolated: No
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

3.6A, 1.4MHz, Low-Voltage, Internal-Switch Step-
Down Regulator with Dynamic Output Voltage Control
Figure 1. MAX1536 Standard Application Circuit
*In single-output voltage applications, OD,
AGND and leave OD and OD open.
**The output voltage changes between two set points depending on V GATE . See the Setting Dynamic Output Voltages with REFIN section.
10
Table 1. Recommended Component Values (I
V
IN
3.3
3.3
3.3
5
5
5
5
(V)
______________________________________________________________________________________
+3.0V TO +5.5V
V
1.8/1.5**
1.8/1.5**
OUT
3.3*
2.5*
0.7*
2.5*
0.7*
V
POWER GOOD
IN
(V)
2.2µF
10Ω
PWM MODE
FULL-LOAD SWITCHING
ON
FREQUENCY
f
PWM
840/1030
820/900
1020
1020
450
640
660
100kΩ
R
75kΩ
TOFF
(kHz)
IDLE MODE
OFF
C
2 X 10µF
+6.3V X5R
C
470pF
IN
COMP
OD , and GATE are general-purpose gates. If OD and OD are not used, connect GATE to
IN
V
COMP
PGOOD
SKIP
SHDN
FBLANK
TOFF
CC
L (µH)
1.2
1.2
1.2
1.2
1.0
1.0
1.0
MAX1536
R
TOF F
30.1
47.5
78.7
30.1
49.9
200
121
( k Ω)
OUT
PGND
AGND
REFIN
GATE
REF
OD
OD
LX
FB
R1 (kΩ)
= 3.6A)
Short
Short
Short
130
130
20
20
CDR7D28MN-1R2
1.2µH, SUMIDA
V
FB(HIGH)
R1
R2
R3
L1
R2 (kΩ)
Open
Open
Open
60.4
69.8
60.4
69.8
C
0.22µF
C
470pF
REF
REFIN
V
R3 (kΩ)
FB(LOW)
R
R
Open
Open
Open
Short
Short
A
B
121
121
V
FB(HIGH)
C
100µF, +6.3V
POSCAP
OUT
R
V
FB(LOW)
Short
Short
Short
Short
A
6.49
2.49
2.49
= V
(kΩ)
V
REF
OUT
V
+0.7V TO V
= V
OUT
(
R1 + R2 + R3
= V
REF
R2 + R3
FB
(
R
R1 + R2
(
Open
Open
Open
Open
1 +
B
R2
IN
10
10
10
(kΩ)
R
R
A
B
)
)
)