MAX1927REUB Maxim Integrated Products, MAX1927REUB Datasheet - Page 2

• Manufacturer Part Number: MAX1927REUB
• Description: DC/DC Switching Converters 800mA PWM Step-Down DC/DC Converter
• Manufacturer: Maxim Integrated Products

ABSOLUTE MAXIMUM RATINGS
BATT, PWM, POK, COMP, SHDN to GND ...............-0.3V to +6V
PGND to GND .......................................................-0.3V to +0.3V
LX, REF, FB to GND ................................-0.3V to (V
Continuous Power Dissipation (T
Low-Output-Voltage, 800mA, PWM Step-Down
DC-DC Converters
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
BATT Input Voltage
Undervoltage Lockout Threshold
Quiescent Current
Quiescent Current in Dropout
Shutdown Supply Current
REFERENCE AND ERROR AMP
FB Voltage Accuracy
FB Input Current
Transconductance (g
Reference Voltage Accuracy
Reference Supply Rejection
PWM CONTROLLER
P-Channel On-Resistance
N-Channel On-Resistance
Current-Sense Transresistance (R
P-Channel Current-Limit Threshold
P-Channel Pulse-Skipping Current Threshold
N-Channel Negative Current-Limit Threshold
BATT
10-Pin µMAX (derate 5.6mW/°C above +70°C) ...........444mW
_______________________________________________________________________________________
= 3.6V,
SHDN = BATT, C
PARAMETER
m
)
A
REF
= +70°C)
CS
= 0.1µF, T
)
A
= 0°C to +85°C, unless otherwise noted. Typical values are at T
V
No load, pulse skipping, PWM = GND
1MHz switching
SHDN = GND
MAX1927R
MAX1928-15
MAX1928-18
MAX1928-25
MAX1928
MAX1927R
MAX1927R
MAX1928-15
MAX1928-18
MAX1928-25
2.6V < V
V
V
V
V
BATT
BATT
BATT
BATT
BATT
BATT
+ 0.3V)
rising or falling (35mV hysteresis)
= 3.6V
= 2.6V
= 3.6V
= 2.6V
BATT
< 5.5V
CONDITIONS
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
0.738
1.477
1.773
2.462
1.231
MIN
2.15
0.11
2.6
1.1
5
-0.55
TYP
2.35
0.75
1.25
0.25
0.17
0.48
0.13
140
190
250
210
175
125
1.5
1.8
2.5
0.5
0.3
0.2
0.1
1.3
10
10
2
A
= +25°C.)
0.762
1.523
1.827
2.538
1.269
MAX
2.55
0.35
0.15
240
340
150
5.5
0.4
0.5
0.3
1.6
10
15
2
UNITS
mA
mV
V/A
µA
µA
µA
µA
nA
µS
V
V
V
V
A
A
A