SC4611 Datasheet, PDF (4/11 Pages) Semtech Corporation – Wide Input Range High Performance Synchronous Buck Switching Regulator

SC4611
POWER MANAGEMENT
Electrical Characteristics (Cont.)
Unless specified: T_A = T_J = -40 to +85°C, Vin = 12V, PVCC = AVCC = 6V, Fsw = 625 kHz, SS/SH = 5V
Parameter
Symbol
Test Conditions
Min
Typ
Min Units
Duty Cycle
Maximum Duty Cycle
Dmax
Fsw = 150 kHz
90
%
Fsw = 1 MHz
80
%
Minimum Pulse Width ⁽¹⁾
Tpulsemin
150
nS
Output
Gate Drive ON-Resistance (H)
R_ONGDH
I_SOURCE = 20 mA
2
Ω
Gate Drive OFF-Resistance (H)
R_OFFGDH
I_SINK = 20 mA
1
Ω
Gate Drive ON-Resistance (L)
R_ONGDL
I_SOURCE = 20 mA
2
Ω
Gate Drive OFF-Resistance (L)
R_OFFGDL
I_SINK = 20 mA
1
Ω
Rise Time
Trise
C_OUT = 2000 pF
15
nS
Fall Time
Tfall
C_OUT = 2000 pF
15
nS
Dead Time Between Drive Signals ⁽¹⁾
30
nS
NOTES:
(1) Guaranteed by design. Not tested in production.
(2) This device is ESD sensitive. Use of standard ESD handling precautions is required
Pin Configuration
TOP VIEW
PH
1
20
PVCC
GDH
2
19
GDL
BST
3
18
PGND
VIN
4
17
AVCC
BDI
5
16
SYNC
CS-
6
15
AGND
CS+
7
14
SS/SH
FB
8
13
OSC
EAO
9
12
CLM
POK
10
11
OVP
Ordering Information
Part Number
Package
Temp. Range
SC4611ITSTRT ⁽²⁾ TSSOP-20 ^{(1) -40°C to +85°C}
Notes:
(1) Only available in tape and reel packaging. A reel
contains 2500 devices.
(2) Lead free device. This product is fully WEEE and RoHS
compliant.
(20 Pin TSSOP)
 2004 Semtech Corp.
4
www.semtech.com