MAX1927REUB+ Maxim Integrated Products, MAX1927REUB+ Datasheet - Page 4

• Manufacturer Part Number: MAX1927REUB+
• Description: IC DC-DC CONV ADJ 10-UMAX
• Manufacturer: Maxim Integrated Products
• Type: Step-Down (Buck)r

Specifications of MAX1927REUB+

• Internal Switch(s): Yes
• Synchronous Rectifier: Yes
• Number Of Outputs: 1
• Voltage - Output: 0.75 ~ 5 V
• Current - Output: 800mA
• Frequency - Switching: 1MHz
• Voltage - Input: 2.6 ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 10-MSOP, Micro10™, 10-uMAX, 10-uSOP
• Power - Output: 444mW
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Low-Output-Voltage, 800mA, PWM Step-Down
DC-DC Converters
ELECTRICAL CHARACTERISTICS (continued)
(V
4
FB Input Current
Reference Voltage Accuracy
Reference-Supply Rejection
PWM CONTROLLER
P-Channel On-Resistance
N-Channel On-Resistance
P-Channel Current-Limit Threshold
P-Channel Pulse-Skipping Current Threshold
LX Leakage Current
Maximum Duty Cycle
Minimum Duty Cycle
Internal Oscillator Frequency
POK COMPARATOR
BATT Operating Voltage Range
Output Low Voltage
Output High Leakage Current
POK Threshold
Output Valid to POK Release Delay
LOGIC INPUTS (SHDN, PWM)
Logic Input High
Logic Input Low
Logic Input Current
BATT
_______________________________________________________________________________________
= 3.6V, SHDN = BATT, C
PARAMETER
REF
= 0.1µF, T
A
= -40°C to +85°C, unless otherwise noted. Typical values are at T
MAX1927R
2.6V < V
V
V
V
V
V
PWM = GND
I
V
V
MAX1927R
MAX1928-15
MAX1928-18
MAX1928-25
POK transitions to high impedance 20ms
after V
2.6V < V
2.6V < V
V
POK
BATT
BATT
BATT
BATT
BATT
FB
POK
BATT
= 0.5V, I
= 0.1 mA
= 5.5V
FB
= 3.6V
= 2.6V
= 3.6V
= 2.6V
= 5.5V, LX = GND or BATT
= 5.5V
BATT
BATT
BATT
> V
POK
POK
< 5.5V
< 5.5 V
< 5.5 V
CONDITIONS
= 1mA
0.650
1.305
1.566
2.175
MIN
1.22
0.10
100
-20
1.1
0.8
1.6
15
1
0.10
A
1.269
0.700
1.395
1.674
2.325
= +25°C.)
MAX
0.30
0.35
0.16
+20
150
0.4
0.5
1.6
1.2
5.5
0.1
0.6
25
2
0
1
1
UNITS
MHz
mV
ms
nA
µA
µA
µA
%
%
V
A
A
V
V
V
V
V