MAX1820XEUB+T Maxim Integrated Products, MAX1820XEUB+T Datasheet - Page 4

• Manufacturer Part Number: MAX1820XEUB+T
• Description: IC REG BUCK WCDMA 10-MSOP
• Manufacturer: Maxim Integrated Products

Specifications of MAX1820XEUB+T

• Applications: Converter, WCDMA Power Amplifier Applications
• Voltage - Input: 2.6 ~ 5.5 V
• Number Of Outputs: 1
• Voltage - Output: 0.4 ~ 3.4 V
• Operating Temperature: 0°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 10-MSOP, Micro10™, 10-uMAX, 10-uSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

WCDMA Cellular Phone 600mA
Buck Regulators
ELECTRICAL CHARACTERISTICS
(V
(Notes 2, 3)
4
Input BATT Voltage
Undervoltage Lockout
Threshold
Quiescent Current
Quiescent Current in Dropout
Shutdown Supply Current
ERROR AMPLIFIER
OUT Voltage Accuracy
(MAX1820)
OUT Input Resistance
(MAX1820)
REF Input Current (MAX1820)
FB Voltage Accuracy
(MAX1821)
FB Input Current (MAX1821)
Transconductance
COMP Clamp Low Voltage
COMP Clamp High Voltage
CONTROLLER
P-Channel On-Resistance
N-Channel On-Resistance
Current-Sense Transresistance
P-Channel Current-Limit
Threshold
P-Channel Pulse-Skipping
Current Threshold
N-Channel Current-Limit
Threshold
BATT
_______________________________________________________________________________________
= 3.6V, SHDN = BATT, SKIP = SYNC = GND, V
PARAMETER
SYMBOL
V
I
V
R
N
P
SHDN
I
UVLO
V
R
V
REF
I
g
OUT
RDS
I
OUT
RDS
FB
Q
FB
CS
IN
m
V
SKIP = GND (MAX1820Z, MAX1821)
SKIP = GND (MAX1820X, MAX1820Y, and
MAX1821X)
SKIP = BATT, no switching
SKIP = GND
SKIP = BATT, no switching
SHDN = GND
V
SKIP = BATT or GND
V
SKIP = BATT, V
FB = COMP
V
I
I
Duty factor = 100%
SKIP = GND
SKIP = BATT
SKIP = GND
LX
LX
BATT
REF
REF
FB
= 180mA, V
= 180mA, V
= 1.4V
= 1.932 ±0.005V, load = 0 to 600mA,
= 0.227 ±0.005V, load = 0 to 30mA,
REF
rising, 1% hysteresis
= 1.25V (MAX1820 only), T
CONDITIONS
BATT
BATT
BATT
= 3.6V
= 3.6V
4.2V
A
= -40°C to +85°C, unless otherwise noted.)
1.225
2.15
3.33
0.35
2.04
0.25
0.75
0.04
0.01
MIN
250
-1.6
2.6
0.2
30
1.275
-0.45
MAX
2000
1000
1000
2.55
3.47
0.45
2.28
0.35
0.75
1.55
0.24
0.14
300
360
5.5
1.0
0.3
50
85
6
1
UNITS
V/A
µA
µA
µA
k
µA
nA
µS
V
V
V
V
V
V
A
A
A