SC1189_07 Datasheet, PDF (2/16 Pages) Semtech Corporation – Programmable Synchronous DC/DC Converter, Dual LDO Controller

SC1189
POWER MANAGEMENT
Absolute Maximum Ratings
Exceeding the specifications below may result in permanent damage to the device, or device malfunction. Operation outside of the parameters specified
in the Electrical Characteristics section is not implied.
Parameter
Symbol
Maximum
Units
VCC to AGND
PGNDH, PGNDL to AGND
V_IN
-0.3 to +7
V
±1
V
BSTH to PGNDH, BSTL to PGNDL
-0.3 to +15
V
DH to PGNDH, DL to PGNDL (Note2)
-1 to +15
V
Operating Temperature Range
Junction Temperature Range
Storage Temperature Range
Lead Temperature (Soldering) 10 Sec.
Thermal Resistance Junction to Ambient
Thermal Impedance Junction to Case
T_A
T_J
T_STG
T_LEAD
θ_JA
θ_JC
0 to +70
0 to +125
-65 to +150
300
80
25
°C
°C
°C
°C
°C/W
°C/W
Electrical Characteristics
Unless specified: V_CC = 4.75V to 5.25V; GND = P_GND = 0V; V_OSENSE = V_O; 0mV < (CS+-CS-) < 60mV; LDOV = 11.4V to 12.6V; T_A = 0 to 70°C
Parameter
Conditions
Min
Typ
Max
Units
Switching Section
Output Voltage
Supply Voltage
Supply Current
Load Regulation
Line Regulation
Current Limit Voltage
Oscillator Frequency
Oscillator Max Duty Cycle
Peak DH Sink/Source Current
Peak DL Sink/Source Current
Gain (A_OL)
VID Source Current
VID Leakage
Power good threshold voltage
Dead Time
I_O = 2A in Application Circuit
VCC
VCC = 5.0V
I_O = 0.8A to 24A
BSTH - DH = 4.5V, DH - PGNDH = 3.3V
DH - PGNDH = 1.5V
BSTL - DL = 4.5V,
VOSENSE to V_O
VIDx ≤ 2.4V
VIDx = 3.3V
VIDx = 0V
DL - PGNDL = 3.3V
DL - PGNDL = 1.5V
See Output Voltage Table
4.5
7
V
8
15
mA
1
%
+0.5
%
55
70
85
mV
170
200
230
kHz
90
95
%
2
A
1
A
100
mA
2
A
1
A
100
mA
35
dB
1
10
uA
±10
µA
100
µA
88
112
%
40
100
ns
 2007 Semtech Corp.
2
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