MAX1951ESA+T Maxim Integrated Products, MAX1951ESA+T Datasheet - Page 3

• Manufacturer Part Number: MAX1951ESA+T
• Description: IC REG PWM 2A 8-SOIC
• Manufacturer: Maxim Integrated Products
• Type: Step-Down (Buck)r

Specifications of MAX1951ESA+T

• Internal Switch(s): Yes
• Synchronous Rectifier: Yes
• Number Of Outputs: 1
• Voltage - Output: 0.8 ~ 5.5 V
• Current - Output: 2A
• Frequency - Switching: 1MHz
• Voltage - Input: 2.6 ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width)
• Power - Output: 976mW
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

ELECTRICAL CHARACTERISTICS (continued)
(V
T
ELECTRICAL CHARACTERISTICS
(V
A
LX
LX On-Resistance, PMOS
LX On-Resistance, NMOS
LX Current-Sense
Transimpedance
LX Current-Limit Threshold
LX Leakage Current
LX Switching Frequency
LX Maximum Duty Cycle
LX Minimum Duty Cycle
THERMAL CHARACTERISTICS
Thermal-Shutdown Threshold
IN AND V
IN Voltage Range
Supply Current
Shutdown Current
V
Threshold
REF
REF Voltage
REF Load Regulation
REF Line Regulation
REF Shutdown Resistance
IN
IN
CC
= +25°C.)
= V
= V
Undervoltage Lockout
CC
CC
PARAMETER
PARAMETER
CC
= 3.3V, PGND = GND, FB in regulation, C
= 3.3V, PGND = GND, FB in regulation, C
2A PWM Step-Down DC-to-DC Regulators
_______________________________________________________________________________________
1MHz, All-Ceramic, 2.6V to 5.5V Input,
Switching with no load, V
COMP = GND
When LX starts/stops switching
I
I
I
From REF to GND, COMP = GND
REF
REF
REF
V
V
V
V
V
V
From LX to COMP, V
Duty cycle = 100%, V
V
V
V
V
When LX starts/stops switching
IN
IN
IN
IN
IN
IN
IN
IN
COMP
COMP
= 0µA, V
= 0 to 40µA, V
= 20µA, V
= 5V
= 3.3V
= 2.6V
= 5V
= 3.3V
= 2.6V
= 5.5V
= 2.6V to 5.5V
= 1.5V, LX = Hi-Z, V
= 1V, V
IN
IN
= 2.6V to 5.5V
IN
= 2.6V to 5.5V
= 2.6V to 5.5V
IN
REF
REF
CONDITIONS
= 2.6V to 5.5V
IN
CONDITIONS
IN
= 2.6V to 5.5V
= 0.1µF, T
IN
= 0.1µF, T
= 2.6V to 5.5V
= 5.5V
IN
= 2.6V to 5.5V
A
A
= -40°C to +85°C, unless otherwise noted.) (Note 3)
= 0°C to +85°C, unless otherwise noted. Typical values are at
High side
Low side
V
LX = GND
T
T
V
V
J
J
LX
CC
CC
rising
falling
= 5.5V
rising
falling
MIN
0.16
0.85
MIN
1.95
1.95
100
-10
2.4
2.6
TYP
0.24
TYP
116
140
163
106
116
-0.6
160
145
3.1
93
15
1
MAX
MAX
0.35
2.03
266
206
4.5
1.1
5.5
2.5
0.2
0.4
10
10
22
1
UNITS
UNITS
MHz
mΩ
mΩ
mA
mA
µA
°C
%
%
Ω
A
%
%
Ω
V
V
V
3