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EL7551CUZ-T7

P1-P3P4-P6P7-P9
4
Typical Performance Curves
Efficiency vs I
O
V
IN
=5V
100
95
90
85
80
75
70
65
60
0.1 0.2 0.4 0.6 1
Load Current I
O
(A)
Efficiency (%)
V
O
=3.3V
V
O
=1.8V
V
O
=1.2V
V
O
=1V
V
O
=2.5V
Power Loss vs I
O
V
IN
=5V
0.25
0.2
0.15
0.1
0.05
0
0 0.2 0.4 0.8 1
Output Current I
O
(A)
Power Loss (W)
Load Regulation
V
O
=3.3V
0.6
0.4
0
-0.2
-0.4
-0.6
0 0.2 0.4 0.8 1
Load Current I
O
(A)
Output Voltage (%)
V
REF
vs Temperature
1.258
1.256
1.254
1.252
1.25
1.248
1.246
1.244
1.242
-40 10 60 110 160
Temperature (°C)
V
REF
(V)
Efficiency vs I
O
V
O
=3.3V
100
95
90
85
80
75
70
65
60
00.20.40.6 1
Load Current I
O
(A)
Efficiency (%)
Line Regulation
V
O
=3.3V
0.6
0.5
0.4
0.2
0
-0.2
-0.4
4.5 4.7 5.1 5.3 5.5
V
IN
(V)
V
O
(%)
V
IN
=4.5V
V
IN
=5V
V
IN
=5.5V
V
IN
=4.5V
V
IN
=5V
V
IN
=5.5V
4.9
I
O
=0.1A
I
O
=1A
V
O
=1.5V
V
O
=3.3V
V
O
=1V
0.6
0.8 0.6
0.2
0.3
0.1
-0.1
-0.3
0.8
F
S
=500kHz
L=Coilcraft DO3316P-472
F
S
=500kHz
L=Coilcraft DO3316P-472
EL7551
5
Typical Performance Curves (Continued)
Switching Waveforms
V
IN
=5V, V
O
=3.8V, I
O
=1A
∆V
I
V
LX
∆V
O
i
L
Power-Up
V
IN
=5V, V
O
=3.8V, I
O
=1A
Transient Response
V
IN
=5V, V
O
=3.8V, I
O
=0A-1A
i
O
∆V
O
V
IN
V
O
Oscillator Frequency vs Temperature
390
385
380
375
370
365
360
-40 0 40 80 120
Temperature (°C)
Oscillator Frequency (kHz)
Input Current vs Temperature
(Enable connected to GND)
0.96
0.94
0.92
0.88
0.86
0.84
0.82
0.8
-40 10 60 110 160
Temperature (°C)
Input Current (mA)
Switching Frequency vs C
OSC
1400
1200
1000
800
600
400
200
0
0 400 600 800 1000
C
OSC
(pF)
F
S
(kHz)
0.9
V
IN
=4.5VV
IN
=5V
V
IN
=5.5V
200
EL7551
6
Typical Performance Curves (Continued)
Block Diagram
Releasing EN
V
IN
=5V, V
O
=3.8V, I
O
=1A
Shut-Down
V
IN
=5V, V
O
=3.8V, I
O
=1A
Short-Circuit Protection
V
IN
=5V
V
IN
V
O
E
N
V
O
i
O
V
O
Power-Down
V
IN
=5V, V
O
=3.8V, I
O
=1A
V
IN
V
O
Drivers
PWM
Controller
Current
Sense
Voltage
Reference
Thermal
Shut-down
Oscillator
0.1µF
39Ω
Controller
Supply
SGND
Power
Power
FET
FET
270pF0.1µF
0.1µF
10µH
V
OUT
2370Ω
1kΩ
47µF
VREF COSC
VHI
VIN
PGND
VDD
VDRV
FB
EN
EL7551
P1-P3P4-P6P7-P9

EL7551CUZ-T7

Mfr. #:
Buy EL7551CUZ-T7
Manufacturer:
Renesas / Intersil
Description:
Switching Voltage Regulators EL7551CUZ 1A INTEGR DC:DC CNVRTR
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union

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