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CS51312 데이터시트(PDF) 5 Page - Cherry Semiconductor Corporation

부품명 CS51312
상세설명  Synchronous CPU Buck Controller for 12V Only Applications
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제조업체  CHERRY [Cherry Semiconductor Corporation]
홈페이지  http://www.cherrycorp.com/
Logo CHERRY - Cherry Semiconductor Corporation

CS51312 데이터시트(HTML) 5 Page - Cherry Semiconductor Corporation

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5
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Electrical Characteristics: 0˚C < TA < 70˚C; 0˚C < TJ < 125˚C; 9V < VCC1 < 14V; 9V ≤ VCC2 ≤ 20V;
2.0V DAC Code(VID4 = VID3 =VID2 = VID1 = 0, VID0 = 1), CGATE(H) = CGATE(L) = 3.3nF, COFF = 390pF; Unless otherwise stated.
Block Diagram
s
General Electrical Specifications
VCC1 Monitor Start Threshold
7.9
8.4
8.9
V
VCC1 Monitor Stop Threshold
7.6
8.1
8.6
V
Hysteresis
Start - Stop
0.15
0.30
0.60
V
VCC1 Supply Current
No Load on GATE(H), GATE(L)
9.5
16
mA
VCC2 Supply Current
No Load on GATE(H), GATE(L)
2.5
4.5
mA
Note 1: The IC power dissipation in a typical application with VCC = 12V, switching frequency fSW = 250kHz, 50nc
MOSFETs and RθJA = 115°C/W yields an operating junction temperature rise of approximately 52°C, and a junction tem-
perature of 77°C with an ambient temperature of 25°C.
Note 2: Guaranteed by design, not 100% tested in production.
+
-
+
-
+
-
VFB
COMP
COFF
OFF
TIME
PWM COMP
DISCHARGE
COMP
VOUT
VID0
VID1
VID2
VID3
VID4
DAC
+
-
-
-
1.1V
EA
CURRENT LIMIT
86mV
0.25V
FAULT
LATCH
R
S
Q
VCC1
OVP
PWRGD
Gnd
GATE(L)
GATE(H)
VCC1
UVLO
NONOVERLAP
LOGIC
+
-
VCC2


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