MAX1556ETB+T Maxim Integrated Products, MAX1556ETB+T Datasheet - Page 2

• Manufacturer Part Number: MAX1556ETB+T
• Description: IC PWM STEP-DN DC-DC CONV 10TDFN
• Manufacturer: Maxim Integrated Products
• Type: Step-Down (Buck)r

Specifications of MAX1556ETB+T

• Internal Switch(s): Yes
• Synchronous Rectifier: Yes
• Number Of Outputs: 1
• Voltage - Output: 0.75 ~ 5.5 V
• Current - Output: 1.2A
• Frequency - Switching: 1MHz
• Voltage - Input: 2.6 ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 10-TDFN Exposed Pad
• Power - Output: 1.95W
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

ABSOLUTE MAXIMUM RATINGS
IN, INP, OUT, D2, SHDN to GND ..........................-0.3V to +6.0V
SS, D1 to GND .............................................-0.3V to (V
PGND to GND .......................................................-0.3V to +0.3V
LX Current (Note 1)...........................................................±2.25A
Output Short-Circuit Duration.....................................Continuous
Continuous Power Dissipation (T
16µA I
Step-Down Converters
Note 1: LX has internal clamp diodes to GND and IN. Applications that forward bias these diodes should take care not to exceed
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
2
Input Voltage
Undervoltage-Lockout Threshold
Quiescent Supply Current
Shutdown Supply Current
Output Voltage Range
Output Accuracy
Maximum Output Current
OUT Bias Current
FB Threshold Accuracy
IN
10-Pin TDFN (derate 24.4mW/°C above +70°C) .......1951mW
_______________________________________________________________________________________
= V
INP
the IC’s package power-dissipation limits.
PARAMETER
= V
SHDN
Q
= 3.6V, T
, 1.2A PWM DC-DC
A
= -40°C to +85°C. Typical values are at T
A
= +70°C)
V
No switching, D1 = D2 = GND
Dropout
SHDN = GND
T
(Note 3)
T
(Note 3)
MAX1556/MAX1556A
MAX1557
D1 = D2 = GND
MAX1556/MAX1557
For preset output voltages
D1 = D2 = GND,
V
300mA (typ),
T
MAX1556/MAX1557
D1 = D2 = GND,
V
at 300mA (typ),
T
MAX1556/MAX1557
A
A
A
A
IN
OUT
OUT
= 0°C to +85°C
= -40°C to +85°C
= 0°C to +85°C
= -40°C to +85°C
rising and falling, 35mV hysteresis (typ)
= 0.75V at
= 0.75V
IN
+ 0.3V)
CONDITIONS
T
T
No load
300mA load
600mA load
1200mA load, MAX1556
1200mA load, MAX1556A
No load
300mA load
600mA load
1200mA load, MAX1556
T
T
No load
300mA load
600mA load
1200mA load, MAX1556 only
No load
300mA load
600mA load
1200mA load, MAX1556 only
A
A
A
A
= +25°C
= +85°C
= +25°C
= +85°C
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
Soldering Temperature (reflow) .......................................+260°C
A
= +25°C, unless otherwise noted.) (Note 2)
-0.25
-0.75
-2.75
-0.75
-2.25
1200
-0.50
-1.75
-3.25
-1.25
-1.75
-2.75
-4.25
2.20
0.75
MIN
-1.5
-1.5
-4.0
600
-1.2
2.6
+0.75
+0.75
-0.75
-2.25
-2.25
-0.75
-2.25
TYP
2.35
0.01
0.01
0.1
0.1
16
27
0
3
0
+1.75
+0.75
+2.25
+0.50
+1.75
+0.25
+2.25
+1.50
+0.25
-1.25
-1.25
-1.00
MAX
+1.5
+1.2
2.55
-1.0
V
5.5
0.1
4.5
25
42
1
0
IN
UNITS
mA
µA
µA
µA
%
%
V
V
V