XRP7740ILB-0X18-F Exar Corporation, XRP7740ILB-0X18-F Datasheet - Page 9

• Manufacturer Part Number: XRP7740ILB-0X18-F
• Description: IC CTRLR PWM/LDO STP-DWN 40TQFN
• Manufacturer: Exar Corporation
• Series: -r

Specifications of XRP7740ILB-0X18-F

• Topology: Step-Down (Buck) Synchronous (4), Linear (LDO) (1)
• Function: Any Function
• Number Of Outputs: 5
• Frequency - Switching: 1.5MHz
• Voltage/current - Output 1: Controller
• Voltage/current - Output 2: Controller
• Voltage/current - Output 3: Controller
• W/led Driver: No
• W/supervisor: No
• W/sequencer: Yes
• Voltage - Supply: 6.5 V ~ 20 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: *
• Package / Case: *
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 1016-1697

© 2011 Exar Corporation
Fig. 12: Startup into 3V prebias – 5V Output
Fig. 10: Sequential Start-up Configuration
CH1:3.3V CH2:5V CH3:1V CH4:1.8V
CH1:Iout (1A/div) CH2: Vout (3.3V)
Fig. 14: Load Transient Response
CH1: Vout(5V)
Q
Q
u
u
a
a
d
d
C
C
h
h
a
a
n
n
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9/28
n
e
e
l
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D
D
i
i
g
g
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i
Fig. 11: Sequential Soft-Stop Configuration
Fig. 13: Sequential Soft-Stop Configuration
t
t
a
a
CH1:5V CH2:3.3V CH3:1.8V CH4:1.2V
CH1:3.3V CH2:5V CH3:1V CH4:1.8V
l
l
Vout Shutdown = 0.8V, No Load
Vout Shutdown = 0.8V, 3A load
P
P
X
X
W
W
R
R
M
M
P
P
S
S
7
7
t
t
7
7
e
e
0
0
p
p
8
8
D
D
o
o
a
a
w
w
n
n
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d
n
d
C
C
X
X
o
o
R
R
n
n
P
P
t
t
Rev. 1.2.0
r
r
7
7
o
o
7
7
l
l
l
l
e
e
4
4
r
r
0
0
s
s