CS5112 Datasheet, PDF (2/13 Pages) Cherry Semiconductor Corporation – 1.4A Switching Regulator with 5V, 100mA Linear Regulator with Watchdog, RESET and ENABLE

V_FB1
V_FB2
SELECT
COMP
I_BIAS
C_OSC
V_REG
CS5112
Multiplexer
Oscillator
Switcher Error Amplifier
−
+
COMP
Logic
Base
Drive
Current Sense Amplifier ₊
−
+
−
Switcher Shutdown
1.4 A
V_IN
V_SW
GND
ENABLE
Linear
+
Error Amplifier
−
Current
Limit
V_LIN
Bandgap
Reference
1.25 V
Over
Temperature
C_DELAY
WDI
RESET &
Watchdog Timer
RESET
Figure 1. Block Diagram
MAXIMUM RATINGS
Rating
Value
Unit
Logic Inputs/Outputs (ENABLE, SELECT, WDI, RESET)
−0.3 to V_LIN
V
V_LIN
−0.3 to 10
V_IN, V_REG:
DC Input Voltage
−0.3 to 26
V
Peak Transient Voltage (26 V Load Dump @ 14 V V_IN)
−0.3 to 40
V
V_SW Peak Transient Voltage
C_OSC, C_Delay, COMP, V_FB1, V_FB2
Power Dissipation
54
V
−0.3 to V_LIM
V
Internally Limited
−
V_LIN Output Current
V_SW Output Current
RESET Output Sink Current
Internally Limited
−
Internally Limited
−
5.0
mA
ESD Susceptibility (Human Body Model)
2.0
kV
ESD Susceptibility (Machine Model)
200
V
Storage Temperature
−65 to 150
°C
Lead Temperature Soldering:
Reflow: (SMD styles only) (Note 1)
230 peak
°C
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.
1. 60 second maximum above 183°C.
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