MAX1820XEUB+T Maxim Integrated Products, MAX1820XEUB+T Datasheet - Page 3

• 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

ELECTRICAL CHARACTERISTICS (continued)
(V
Typical values are at T
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
LX Leakage Current
Maximum Duty Cycle
Minimum Duty Cycle
SYNC AND OSCILLATOR
SYNC Divide Ratio
(MAX1820X)
SYNC Capture Range
(MAX1820X)
SYNC Leakage Current
Frequency
SYNC Divide Ratio
(MAX1820Y)
SYNC Capture Range
(MAX1820Y)
Internal Oscillator Frequency
(MAX1820Z, MAX1821)
LOGIC INPUTS (SKIP, SHDN)
Logic Input High
Logic Input Low
Logic Input Current
BATT
= 3.6V, SHDN = BATT, SKIP = SYNC = GND, V
PARAMETER
_______________________________________________________________________________________
A
= +25°C.) (Note 2)
SYMBOL
duty
duty
I
N
P
SYNC
f
R
OSC
V
I
V
RDS
RDS
LX
CS
IH
IL
MAX
MIN
WCDMA Cellular Phone 600mA
I
I
I
I
Duty factor = 100%
SKIP = GND
SKIP = BATT
SKIP = GND
V
SKIP = GND
SKIP = BATT, V
S Y N C = si ne w ave, S Y N C i np ut = 200m V
S Y N C = si ne w ave, S Y N C i np ut = 800m V
SYNC = sine wave, AC-coupled,
SYNC input = 500mV
V
V
MAX1821X)
S Y N C = si ne w ave, S Y N C i np ut = 200m V
S Y N C = si ne w ave, S Y N C i np ut = 800m V
SYNC = sine wave, AC-coupled,
SYNC input = 500mV
SYNC = GND
LX
LX
LX
LX
BATT
SYNC
SYNC
= 180mA, V
= 180mA, V
= 180mA, V
= 180mA, V
= 5.5V, LX = GND or BATT
= 1V (MAX1820Z, MAX1821)
= 1V (MAX1820X, MAX1820Y, and
REF
= 1.25V (MAX1820 only), T
CONDITIONS
BATT
BATT
BATT
BATT
BATT
= 3.6V
= 2.6V
= 3.6V
= 2.6V
= 4.2V
P-P
P-P
P-P
Buck Regulators
P-P
P-P
P-P
P-P
A
= 0°C to +85°C, unless otherwise noted.
MIN
0.25
0.75
0.04
0.02
-1.6
100
0.8
1.6
13
13
10
18
18
15
-1
-1
-5
-1
-0.85
TYP
0.15
0.50
0.13
0.08
19.8
0.2
0.2
0.3
1.2
0.1
0.1
13
1
MAX
-0.45
0.35
0.75
1.55
0.24
0.14
0.3
1.2
0.4
10
13
13
16
+1
+5
18
18
21
1
0
1
UNITS
Hz/Hz
Hz/Hz
MHz
MHz
MHz
V/A
µA
µA
µA
%
%
Ω
Ω
A
A
A
V
V
3