MAX1808EUB+ Maxim Integrated, MAX1808EUB+ Datasheet - Page 3

• Manufacturer Part Number: MAX1808EUB+
• Description: Current & Power Monitors & Regulators
• Manufacturer: Maxim Integrated

ELECTRICAL CHARACTERISTICS (continued)
(V
T
Maxim Integrated
ENABLE (EN)
EN Input High
EN Input Low
EN Input Leakage Current
OSCILLATOR
Switching Frequency
1MHz Switching Frequency
2MHz Switching Frequency
Switching Frequency Adjustment
Range (Note 3)
RT Voltage
PWM Ramp Peak-to-Peak
Amplitude
PWM Ramp Valley
Minimum Controllable On-Time
Maximum Duty Cycle
Minimum Low-Side On-Time
OUTPUT DRIVERS/DRIVER SUPPLY (DRV)
DRV Undervoltage Lockout
DRV Undervoltage Lockout
Hysteresis
DH On-Resistance
DL On-Resistance
DH Peak Current
DL Peak Current
DH/DL Break-Before-Make Time
DL/DH Break-Before-Make Time
SOFT-START
Soft-Start Duration
Reference Voltage Steps
CURRENT LIMIT/HICCUP
Current-Limit Threshold
Adjustment Range
A
IN
= T
= 12V, R
J
Low-Cost, Small, 4.5V to 28V Wide Operating
= -40°C to +125°C (MAX15026B/C/DATD+), unless otherwise noted. Typical values are at T
PARAMETER
Range, DC-DC Synchronous Buck Controller
RT
= 27kΩ, R
LIM
= 30kΩ, C
V
SYMBOL
I
DRV_UVLO
V
LEAK_EN
V
V
V
VALLEY
RAMP
V
EN_H
f
EN_L
SW
RT
VCC
= 4.7µF, C
V
V
V
R
R
R
f
R
V
Low, sinking 100mA, V
High, sourcing 100mA, V
Low, sinking 100mA, V
High, sourcing 100mA, V
C
C
DH at 1V (falling) to DL at 1V (rising)
DL at 1V (falling) to DH at 1V (rising)
Cycle-by-cycle valley current-limit
threshold adjustment range
valley limit = V
SW
EN
EN
EN
RT
RT
RT
RT
DRV
LOAD
LOAD
= 600kHz
rising
= 27kΩ
= 15.7kΩ
= 7.2kΩ
= 15.7kΩ
falling
= 5.5V
rising
= 10nF
= 10nF
IN
= 1µF, T
CONDITIONS
LIM
/10
A
= -40°C to +85°C (MAX15026B/CETD+, MAX15026BETD/V+),
Sinking
Sourcing
Sinking
Sourcing
BST
BST
BST
BST
= 5V
= 5.2V
= 5V
= 5.2V
0.997
1.14
1.19
MIN
540
200
0.9
1.8
4.0
85
75
30
-1
10 (18, Note 5)
10 (20, Note 6)
A
= +25°C.) (Note 2)
MAX15026
1.205
2048
TYP
1.20
1.05
600
110
400
2.0
1.8
0.8
4.2
1.5
1.5
65
88
64
1
1
1
4
3
4
3
1.103
MAX
2000
1.26
1.22
660
100
150
300
1.1
2.4
4.4
4.5
4.5
+1
3
3
Switching
UNITS
Cycles
Steps
MHz
MHz
kHz
kHz
mV
mV
µA
ns
ns
ns
ns
%
Ω
Ω
V
V
V
V
V
V
A
A
3