MAX669EUB+ Maxim Integrated Products, MAX669EUB+ Datasheet - Page 3

• Manufacturer Part Number: MAX669EUB+
• Description: IC PWM BST FLYBCK ISO CM 10UMAX
• Manufacturer: Maxim Integrated Products

Specifications of MAX669EUB+

• Pwm Type: Current Mode
• Number Of Outputs: 1
• Frequency - Max: 575kHz
• Duty Cycle: 94%
• Voltage - Supply: 1.8 V ~ 28 V
• Buck: No
• Boost: Yes
• Flyback: Yes
• Inverting: No
• Doubler: No
• Divider: No
• Cuk: No
• Isolated: Yes
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 10-MSOP, Micro10™, 10-uMAX, 10-uSOP
• Frequency-max: 575kHz
• Output Current: 6 A
• Switching Frequency: 500 KHz
• Operating Supply Voltage: 1.8 V to 28 V
• Supply Current: 0.22 mA
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Output Voltage: 3 V to 28 V
• Duty Cycle (max): 94 %
• Synchronous Pin: Yes
• Topology: Boost, Flyback
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

ELECTRICAL CHARACTERISTICS
ELECTRICAL CHARACTERISTICS (continued)
(V
(V
PWM Controller
Maximum Duty Cycle
Minimum EXT Pulse Width
Minimum SYNC Input-Pulse Duty Cycle
Minimum SYNC Input Low Pulse Width
SYNC Input Rise/Fall Time
SYNC Input Frequency Range
SYNC/SHDN Falling Edge to Shutdown Delay
SYNC/SHDN Input High Voltage
SYNC/SHDN Input Low Voltage
SYNC/SHDN Input Current
EXT Sink/Source Current
EXT On-Resistance
Input Voltage Range, V
Input Voltage Range with V
FB Threshold
FB Input Current
Current-Limit Threshold
Idle Mode Current-Sense Threshold
CS+ Input Current
V
Shutdown Supply Current (V
Reference and LDO Regulators
LDO Output Voltage
LDO Undervoltage Lockout Threshold
PWM CONTROLLER
REFERENCE AND LDO REGULATORS
CC
CC
CC
= LDO = 5V, R
= LDO = 5V, R
Supply Current (Note 1)
PARAMETER
PARAMETER
OSC
OSC
_______________________________________________________________________________________
CC
= 200kΩ, T
= 200kΩ, T
CC
CC
Tied to LDO
)
A
A
= -40°C to +85°C, unless otherwise noted.) (Note 2)
= 0°C to +85°C, unless otherwise noted. Typical values are at T
1.8V to 28V Input, PWM Step-Up
R
R
R
Not tested
3V < V
1.8V < V
3V < V
1.8V < V
SYNC/SHDN = 5V
SYNC/SHDN = 28V
EXT forced to 2V
EXT high or low
MAX668
MAX669
CS+ forced to GND
V
SYNC/SHDN = GND, V
LDO load =
∞ to 400Ω
Sensed at LDO, falling edge,
hysteresis = 1%, MAX669 only
V
FB
OSC
OSC
OSC
FB
= 1.30V, V
= 1.30V
= 200kΩ ±1%
= 100kΩ ±1%
= 500kΩ ±1%
CC
CC
CC
CC
< 28V
< 28V
< 3V (MAX669)
< 3V (MAX669)
CONDITIONS
CONDITIONS
CC
5V ≤ V
(includes LDO dropout)
3V ≤ V
(includes LDO dropout)
= 3V to 28V
CC
CC
CC
Controllers in µMAX
≤ 28V
≤ 28V
= 28V
MIN
100
2.0
1.5
87
86
86
1.22
4.50
2.65
2.40
MIN
1.8
2.7
85
3
3
A
= +25°C.)
TYP
290
0.5
1.5
90
90
90
20
50
70
1
2
MAX
1.28
5.50
5.50
2.60
115
350
5.5
MAX
28
28
20
27
0.45
0.30
200
200
500
1
6
3.0
6.5
93
94
94
45
5
UNITS
UNITS
mV
mV
kHz
nA
µA
µA
µA
ns
ns
µs
%
%
µA
ns
Ω
V
V
V
V
V
V
V
V
A
3