H34063B Datasheet, PDF (2/7 Pages) Hi-Sincerity Mocroelectronics – DC-to-DC Converter Integrate Circuit Devices

HI-SINCERITY
MICROELECTRONICS CORP.
Spec. No. : IC200806
Issued Date : 2008.07.07
Revised Date :
Page No. : 2/7
Electrical Characteristics (V_CC=5V,T_A=0~70°C, unless otherwise specified)
Parameter
Oscillator
Charging Current
Discharge Current
Frequency
Discharge to Charge Current Ratio
Current Limit Sense Voltage
Output Switch
Saturation Voltage,
Darlington Connection
Saturation Voltage
DC Current Gain
Collector Off-State Current
Comparator
Threshold Voltage
Threshold Voltage Line Regulation
Input Bias Current
Total Device
Supply Current
Symbol
Test Condition
I_chg
I_dischg
f_OSC
I_dischg/I_chg
V_IPK
V_CC=5~35V, Ta=25^oC
V_CC=5~35V, Ta=25^oC
V_PIN5=0, C_T=1nF, Ta=25^oC
V_PIN7=V_CC, Ta=25^oC
I_dischg=I_chg, Ta=25^oC
Min. Typ. MH. Unit
10
25
42
uA
100 150 260 uA
27
37
47 KHz
5.2
6
7.5
250 300 350 mV
V_CE(sat) 1
V_CE(sat) 2
h_FE
I_CC(off)
I_SW=1A, V_C(SW)=V_C(DR)
I_SW=1A, I_C(DR)=50mA
I_SW=1A, V_CE=5V
V_CE=35V, Ta=25^oC
-
1
1.3
V
-
0.4 0.7
V
35 120
-
-
10 100 uA
V_FB
ΔV_FB
I_IB
V_CC=5~35V
V_IN=0V
1.227 1.25 1.273 V
-
1.5
10
mV
-
40 400 nA
V_CC=5~35V, V_PIN7=V_CC, V_Pin5>V_FB,
I_CC
C_T=0.001uF, Pin7=GND, Remaining
-
1.6
4
mA
pins open
Block Diagram
SC
Pin1: 1.2A Switch Collector
SE
Pin2: Darlington Switch Emitter
TC
Pin3: Oscilletor Timing Capacitor
GND
Pin4: Power GND
Q2
Q1
80Ω
QS
R
CT
IPK
Oscillator
1.25V
Reference Voltage
Comparator
+
-
DRI
Pin8: Driver Collector
IPK
Pin7: Highside Current Sense
Input, VCC-VIPK=300mV
VCC
Pin6: Power Supply Input
FB
Pin5: Feedback Comparator
Inverting Input
H34063BP, H34063BS
HSMC Product Specification