H34063A Datasheet, PDF (2/7 Pages) Hi-Sincerity Mocroelectronics – DC-TO-DC CONVERTER INTEGRATE CIRCUIT DEVICES

HI-SINCERITY
MICROELECTRONICS CORP.
Spec. No. : IC200407
Issued Date : 2003.04.01
Revised Date : 2005.03.25
Page No. : 2/7
Electrical Characteristics (V_CC=5V,T_A=0~70°C, unless otherwise specified)
Parameter
Symbol
Test Condition
Min.
Oscillator
Charging Current
I_chg
V_CC=5~40V, Ta=25^oC
10
Discharge Current
I_dischg
V_CC=5~40V, Ta=25^oC
140
Frequency
f_OSC
V_PIN5=0, C_T=1nF, Ta=25^oC
28
Discharge to Charge Current Ratio I_dischg/I_chg V_PIN7=V_CC, Ta=25^oC
5.2
Current Limit Sense Voltage
V_IPK
I_dischg=I_chg, Ta=25^oC
250
Output Switch
Saturation Voltage,
Darlington Connection
V_CE(sat) 1 I_SW=1A, V_C(SW)=V_C(DR)
-
Saturation Voltage
V_CE(sat) 2 I_SW=1A, I_C(DR)=50mA
-
DC Current Gain
h_FE
I_SW=1A, V_CE=5V
35
Collector Off-State Current
I_CC(off)
V_CE=40V, Ta=25^oC
-
Comparator
Threshold Voltage
Threshold Voltage Line Regulation
Input Bias Current
Total Device
V_FB
∆V_FB
I_IB
V_CC=5~40V
V_IN=0V
1.23
-
-
Supply Current
V_CC=5~40V, V_PIN7=V_CC, V_Pin5>V_FB,
I_CC
C_T=0.001uF, Pin7=GND,
-
Remaining pins open
Typ.
25
190
33
6
300
1
0.4
120
10
1.25
1.5
40
1.6
Max.
40
240
40
7.5
350
1.3
0.7
-
100
1.27
6
400
3
Unit
uA
uA
KHz
mV
V
V
uA
V
mV
nA
mA
Block Diagram
SC
Pin1: 1.6A 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
H34063AP, H34063AS
HSMC Product Specification