NCP1203
Adj
1
HV
8
HV CURRENT
SOURCE
SKIP CYCLE
COMPARATOR
80 k
1.2 V
24 k
NC
7
FB
2
+
−
UVLO HIGH AND LOW
INTERNAL REGULATOR
INTERNAL V
CC
CURRENT
SENSE
Q FLIP−FLOP
DCmax = 80%
V
6
CC
SET
Q
250 ns
L.E.B.
40−60−100 kHz
CLOCK
OVERLOAD
MANAGEMENT
3
RESET
+
−
20 k
57 k
Drv
5
GROUND
4
V
REF
+
−
25 k
±250 mA
1 V
Figure 2. Internal Circuit Architecture
MAXIMUM RATINGS
Rating
Symbol
, Drv
Value
16
Unit
Power Supply Voltage
V
V
V
CC
Power Supply Voltage on all other pins except Pin 5 (Drv), Pin 6 (V ) and Pin 8 (HV)
−
−0.3 to 10
5.0
CC
Maximum Current into all pins except Pin 6 (V ) and Pin 8 (HV) when
mA
CC
−
10 V ESD diodes are activated
Thermal Resistance Junction−to−Air, PDIP−8 Version
Thermal Resistance Junction−to−Air, SOIC Version
R
R
100
178
°C/W
°C/W
q
q
JA
JA
Maximum Junction Temperature
Temperature Shutdown
TJ
150
170
°C
°C
°C
°C
KV
V
MAX
−
Hysteresis in Shutdown
−
−
−
−
−
30
Storage Temperature Range
−60 to +150
2.0
ESD Capability, HBM Model, All pins except Pin 6 (V ) and Pin 8 (HV)
CC
ESD Capability, Machine Model
200
Maximum Voltage on Pin 6 (V ) and Pin 8 (HV) Decoupled to Ground with 10 mF
450
V
CC
Maximum ratings are those values beyond which device damage can occur. Maximum ratings applied to the device are individual stress limit
values (not normal operating conditions) and are not valid simultaneously. If these limits are exceeded, device functional operation is not implied,
damage may occur and reliability may be affected.
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