SP7651ER-L Exar Corporation, SP7651ER-L Datasheet - Page 3

• Manufacturer Part Number: SP7651ER-L
• Description: IC BUCK REG 900KHZ 26DFN
• Manufacturer: Exar Corporation
• Series: Power Blox™r
• Type: Step-Down (Buck)r

Specifications of SP7651ER-L

• Internal Switch(s): Yes
• Synchronous Rectifier: Yes
• Number Of Outputs: 1
• Voltage - Output: 0.8 V ~ 19 V
• Current - Output: 3A
• Frequency - Switching: 900kHz
• Voltage - Input: 2.5 V ~ 20 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: *
• Package / Case: 26-VFDFN Exposed Pad
• Primary Input Voltage: 20V
• No. Of Outputs: 1
• Output Voltage: 19V
• Output Current: 3A
• No. Of Pins: 26
• Operating Temperature Range: -40°C To +85°C
• Supply Voltage Range: 2.5V To 20V
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

Unless otherwise specified: -40°C < T
0.0V, UVIN = 3.0V, CV
The
PARAMETER
CONTROL LOOP: PWM COMPARATOR, RAMP & LOOP DELAY PATH
Ramp Amplitude
RAMP Offset
RAMP Offset Temp. Coefficient
GH Minimum Pulse Width
Maximum Controllable Duty Ratio
Maximum Duty Ratio
Internal Oscillator Ratio
TIMERS: SOFTSTART
SS Charge Current:
SS Discharge Current:
PROTECTION: Short Circuit & Thermal
Short Circuit Threshold Voltage
Hiccup Timeout
Number of Allowable Clock Cycles at
100% Duty Cycle
Minimum GL Pulse After 20 Cycles
Thermal Shutdown Temperature
Thermal Recovery Temperature
Thermal Hysteresis
OUTPUT: POWER STAGE
High Side R
Synchronous FET R
Maximum Output Current
Rev J: 3/4/07
•
denotes the specifications which apply over the full temperature range, unless otherwise specified.
dson
CC
dson
= µF, C
COMP
SP765 Wide Input Voltage Range 3A, 900kHz, Buck Regulator
AMB
= 0.µF, C
< 85°C, -40°C<Tj<125°C, 4.5V < V
MIN. TYP.
0.92
00
80
0.2
92

3
SS
= 50nF, Typical measured at V
0.25
900
200
45
35
.
.
0.5
90
97
0
20
0
40
40
-2
MAX. UNITS
3
.28
80
990
0.3
mV/°C
Cycles
Cycles
kHz
mΩ
mΩ
mA
ms
µA
°C
°C
°C
ns
%
%
V
V
V
A
CC
ELECTRICAL CHARACTERISTICS
< 5.5V, 3V<Vin<20V, BST=LX + 5V, LX = GND =
CC
•
•
•
•
= 5V.
CONDITIONS
TA = 25°C, RAMP COMP
until GH starts Switching
Maximum Duty Ratio Measured
just before pulsing begins
Valid for 20 cycles
Fault Present, SS = 0.2V
Measured V
V
V
V
V
T
V
T
amb
amb
fb
fb
fb
cc
cc
= 0.5V
= 0.7V
= 0.7V
= 5V ; I
= 5V ; I
= 25°C
= 25°C
© Copyright 2007 Sipex Corporation
out
out
ref
= 3A
= 3A
(0.8V) - VFB